criyle/codenet-compile-errors huggingface dataset:
Language: C

include<stdio.h>
#define MAX 250
int heap[MAX];

int main(){
  int i,H,t;
  scanf("%d\n", &H);

  for(i=1;i<=H;i++) scanf("%d",&heap[i]);

  for(i=1;i<=H;i++){
    printf(" node %d: key = %d,",i,heap[i]);
    if(i>1) printf(" parent key = %d,",heap[parent(i)]);
    if(left(i)<=H) printf(" left key = %d,",heap[left(i)]);
    if(right(i)<=H) printf(" right key = %d,",heap[right(i)]);
    printf("\n");
  }
    return 0;
}
int parent(int i){return i/2;}
int left(int i){return 2*i;}
int right(int i){return 2*i+1;}




Compiler output:
main.c:1:8: error: expected '=', ',', ';', 'asm' or '__attribute__' before '<' token
    1 | include<stdio.h>
      |        ^
main.c: In function 'main':
main.c:7:3: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
    7 |   scanf("%d\n", &H);
      |   ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | include<stdio.h>
main.c:7:3: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
    7 |   scanf("%d\n", &H);
      |   ^~~~~
main.c:7:3: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:9:33: error: 'heap' undeclared (first use in this function)
    9 |   for(i=1;i<=H;i++) scanf("%d",&heap[i]);
      |                                 ^~~~
main.c:9:33: note: each undeclared identifier is reported only once for each function it appears in
main.c:12:5: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
   12 |     printf(" node %d: key = %d,",i,heap[i]);
      |     ^~~~~~
main.c:12:5: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:12:5: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:12:5: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:13:45: error: implicit declaration of function 'parent' [-Wimplicit-function-declaration]
   13 |     if(i>1) printf(" parent key = %d,",heap[parent(i)]);
      |                                             ^~~~~~
main.c:14:8: error: implicit declaration of function 'left' [-Wimplicit-function-declaration]
   14 |     if(left(i)<=H) printf(" left key = %d,",heap[left(i)]);
      |        ^~~~
main.c:15:8: error: implicit declaration of function 'right' [-Wimplicit-function-declaration]
   15 |     if(right(i)<=H) printf(" right key = %d,",heap[right(i)]);
      |        ^~~~~
Language: C

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
typedef struct{
  int id;
  //int parent;
  //int left;
  //int right;
}Node;
void buildMaxHeap(Node *T,int n){
  int i;
  for(i=n/2;1<=i;i--){
    maxHeapify(T, i, n);
  }
}
int maxHeapify(Node *T,int i,int n){
  int l,r;
  int largest;
  Node A;
  
  l=2*i;
  r=2*i+1;
  if(l <= n && T[l].id > T[i].id){
    largest = l;
  }else largest = i;
  if(r <= n && T[r].id > T[largest].id){
    largest = r;
  }
  if(largest != i){
    A = T[i];
    T[i]=T[largest];
    T[largest]=A;
    maxHeapify(T, largest,n);
  }
}
int main(){
  int n,x;
  int i;
  Node *T;
  
  scanf("%d",&n);
  T=(Node*)malloc(sizeof(Node)*(n+1));
  for(i=1;i<=n;i++){//入力
    scanf("%d",&x);
    T[i].id=x;
    T[2*i].parent=x;
    T[2*i+1].parent=x;
    if(i%2==0)T[i/2].left=x;
    else T[(i-1)/2].right=x;
    }
  buildMaxHeap(T,n);
  for(i=1;i<=n;i++){//出力
    printf(" %d",T[i]);
    }
  printf("\n"); 
  return 0;
}



Compiler output:
main.c: In function 'buildMaxHeap':
main.c:13:5: error: implicit declaration of function 'maxHeapify' [-Wimplicit-function-declaration]
   13 |     maxHeapify(T, i, n);
      |     ^~~~~~~~~~
main.c: In function 'main':
main.c:46:11: error: 'Node' has no member named 'parent'
   46 |     T[2*i].parent=x;
      |           ^
main.c:47:13: error: 'Node' has no member named 'parent'
   47 |     T[2*i+1].parent=x;
      |             ^
main.c:48:21: error: 'Node' has no member named 'left'
   48 |     if(i%2==0)T[i/2].left=x;
      |                     ^
main.c:49:20: error: 'Node' has no member named 'right'
   49 |     else T[(i-1)/2].right=x;
      |                    ^
Language: C

#include<stdio.h>

#define MAX 100000

int parent(int);
int left(int);
int right(int);

int main(){
  int i,num,H[MAX+1];

  scanf("%d",&n);
  for(i=1;i<=num;i++)
    scanf("%d",&H[i]);

  for(i=1;i<=num;i++){
    printf("node %d: key = %d, ",i,H[i]);
    if(parent(i) >= 1)printf("parent key = %d, ",H[parent(i)]);
    if(left(i) <= num)printf("left key = %d, ",H[left(i)]);
    if(right(i) <= num)printf("right key = %d, ",H[right(i)]);
    printf("\n");
  }

  return 0;
}

int parent(int i){
  return i/2;
}

int left(int i){
  return 2 * i;
}

int right(int i){
  return 2 * i + 1;
} 



Compiler output:
main.c: In function 'main':
main.c:12:15: error: 'n' undeclared (first use in this function)
   12 |   scanf("%d",&n);
      |               ^
main.c:12:15: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include<stdio.h>

int main(){
	long long int x[300];
	int limit;
	
	scanf("%d",&limit);
	
	for(int i=1;i<=limit;i++) {
		scanf("%d", &x[i]);
	}

	for(int i=1;i<=limit;i++){
	printf("node %d: key = %d, ",i,heap[i]);
	if(i/2>0)
		printf("parent key = %d, ",heap[i/2]);
	if(i*2<=limit)
		printf("left key = %d, ",heap[i*2]);
	if(i*2+1<=limit)
		printf("right key = %d, ",heap[i*2+1]);
	printf("\n");
}

return 0;
}


Compiler output:
main.c: In function 'main':
main.c:14:40: error: 'heap' undeclared (first use in this function)
   14 |         printf("node %d: key = %d, ",i,heap[i]);
      |                                        ^~~~
main.c:14:40: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include<stdio.h>
#define NIL -1

 int p(int i){return i/2;}
 int l(int i){return i*2;}
 int r(int i){return i*2+1;}

 int main(){
        int n,i,key[251],root;
        scanf("%d",&n);
        for(i=1;i<=n;i++){scanf("%d",&key[i]);}
        for(i=1;i<=n;i++){
          printf("node %d: key = %d, ",&i);
          if(p(i)>=1){
            printf("parent key = %d, left key = %d, right key = %d,\n",key[p(i)],key[l(i)],key[r(i)]);
                 }
        
        return 0;
        }


Compiler output:
main.c: In function 'main':
main.c:19:9: error: expected declaration or statement at end of input
   19 |         }
      |         ^
Language: C

#include<stdio.h>
#define NIL -1

 int p(int i){return i/2;}
 int l(int i){return i*2;}
 int r(int i){return i*2+1;}

 int main(){
        int n,i,key[251],root;
        scanf("%d",&n);
        for(i=1;i<=n;i++){scanf("%d",&key[i]);}
        for(i=1;i<=n;i++){
          printf("node %d: key = %d, ",&i);
          if(p(i)>=1){
               printf("parent key = %d, ",key[p(i)]);
               }
          printf("left key = %d, right key = %d,\n",key[l(i)],key[r(i)]);
                 
          }
        }
        
        return 0;
        }


Compiler output:
main.c:22:9: error: expected identifier or '(' before 'return'
   22 |         return 0;
      |         ^~~~~~
main.c:23:9: error: expected identifier or '(' before '}' token
   23 |         }
      |         ^
Language: C

#include<stdio.h>
#define MAX 260
#define NIL -1

int Tree[MAX];

int n;

void maxHeapify(int i){
  int largest,exchange,l;
  l = getLeft(i);
  r = getRight(i);
  
  if(n>=l && Tree[l]>Tree[i])
    largest = r;
  if (largest != i){
    exchange =  Tree[i];
    Tree[i] = Tree[largest];
    Tree[largest] = exchange;
  }
  maxHeapify(largest);
}


int getParent(int i){
  return i/2;
}

int getLeft(int i){
  return (2*i);
}

int getRight(int i){
  return (2*i + 1);
}

main()
{
  int i;
  scanf("%d",&n);

  for(i=1; i<=n; i++){

    scanf("%d",&Tree[i]);

  }

  for(i=1; i<=n; i++){
    
    printf("ode %d: key = %d, ",i,Tree[i]);
    if(getParent(i) != 0)printf("parent key = %d, ",Tree[getParent(i)]);
    if(getLeft(i) <= n) printf("left key = %d, ",Tree[getLeft(i)]);
    if(getRight(i) <= n)printf("right key = %d, ",Tree[getRight(i)]);
    printf("\n");
  }
  return 0;
}

Compiler output:
main.c: In function 'maxHeapify':
main.c:11:7: error: implicit declaration of function 'getLeft' [-Wimplicit-function-declaration]
   11 |   l = getLeft(i);
      |       ^~~~~~~
main.c:12:3: error: 'r' undeclared (first use in this function)
   12 |   r = getRight(i);
      |   ^
main.c:12:3: note: each undeclared identifier is reported only once for each function it appears in
main.c:12:7: error: implicit declaration of function 'getRight' [-Wimplicit-function-declaration]
   12 |   r = getRight(i);
      |       ^~~~~~~~
main.c: At top level:
main.c:37:1: error: return type defaults to 'int' [-Wimplicit-int]
   37 | main()
      | ^~~~
Language: C

#include<stdio.h>

#define MAX 260
#define NIL -1

int Tree[MAX]; 

int n;

void maxHeapify(int i){
  int largest ,exchange;
  l = getLeft(i);
  r = getRight(i);
  
  if( n >= l && Tree[l] > Tree[i] )
    largest = r;
  if (largest != i){
    exchange =  Tree[i];
    Tree[i] = Tree[largest];
    Tree[largest] = exchange;
  }
  maxHeapify(largest);
}


int getParent( int i ){
  return i/2;
}

int getLeft(int i){
  return (2*i);
}

int getRight(int i){
  return (2*i + 1);
}

main()
{
  int i;
  scanf("%d", &n );

  for(i = 1; i <= n; i++){

    scanf("%d", &Tree[i]);

  }

  for(i = 1; i <= n; i++){
    
    printf("node %d: key = %d, ", i, Tree[i]);
    if(getParent(i) != 0)printf("parent key = %d, ", Tree[getParent(i)]);
    if(getLeft(i) <= n) printf("left key = %d, ", Tree[getLeft(i)]);
    if(getRight(i) <= n)printf("right key = %d, ", Tree[getRight(i)]);
    printf("\n");
  }
  return 0;
}

Compiler output:
main.c: In function 'maxHeapify':
main.c:12:3: error: 'l' undeclared (first use in this function)
   12 |   l = getLeft(i);
      |   ^
main.c:12:3: note: each undeclared identifier is reported only once for each function it appears in
main.c:12:7: error: implicit declaration of function 'getLeft' [-Wimplicit-function-declaration]
   12 |   l = getLeft(i);
      |       ^~~~~~~
main.c:13:3: error: 'r' undeclared (first use in this function)
   13 |   r = getRight(i);
      |   ^
main.c:13:7: error: implicit declaration of function 'getRight' [-Wimplicit-function-declaration]
   13 |   r = getRight(i);
      |       ^~~~~~~~
main.c: At top level:
main.c:38:1: error: return type defaults to 'int' [-Wimplicit-int]
   38 | main()
      | ^~~~
Language: C

#include<stdio.h>
#define N 250

int parent(int i){
  return i/2;
}

int left(int i){
  return 2*i;
}

int right(int i){
  return 2*i+1;
}

int main(void){
  int heap_size, i, A[N];
  
  scanf("%d", &heap_size);
  for(i=1; i<=heap_size; i++) scanf("%d", &A[i]);
  
  for(i=1; i<=heap_size; i++){
    
    printf("node %d; key = %d, ", i, A[i]);
    
    if(parent(i) > 0) printf("parent key = %d, ", A[parent(i)]);
    if(left(i) <= heap_size) printf("left key = %d, ", A[left(i)]);
    if(right(i) <= heap_size) printf("right key = %d, ", A[right(i)]);
    
    printf("\n");
    
  }

Compiler output:
main.c: In function 'main':
main.c:32:3: error: expected declaration or statement at end of input
   32 |   }
      |   ^
Language: C

#include<stdio.h>
typedef struct {
  int left;
  int right;
  int parent;
  int key;
} Node;

int a[250];
 
 


void print(int,Node[]);
void inHeap(int);
int main(){
   int heapSize;
 int i;
  scanf("%d",&heapSize);
  for(i=0;i<heapSize;i++){
    scanf("%d",&a[i]);
  }

  inHeap(heapSize);
 
  return 0;
}
int left(int i){
  return 2*i;
}
int right(int i){
  return 2*i+1;
}
int parent(int i){
  return i/2;
}
void inHeap(int heapSize){
  int i;
 Node n[250];
  for(i=0;i<heapSize;i++){

    n[i].key=a[i];
    n[left[i]].left=a[i+1];
    n[right[i]].right=a[i+2];
    
    if(i!=0){
      n[parent[i]].parent=a[i];
    } else{
      n[i].parent=0;
    }
  }
  print(heapSize,n);
}
void print(int heapSize, Node n[]){
  int i;
  for(i=0;i<heapSize;i++){
    printf("node %d: key = %d, ",i+1,n[i].key);
  }


}

Compiler output:
main.c: In function 'inHeap':
main.c:43:11: error: subscripted value is neither array nor pointer nor vector
   43 |     n[left[i]].left=a[i+1];
      |           ^
main.c:44:12: error: subscripted value is neither array nor pointer nor vector
   44 |     n[right[i]].right=a[i+2];
      |            ^
main.c:47:15: error: subscripted value is neither array nor pointer nor vector
   47 |       n[parent[i]].parent=a[i];
      |               ^
Language: C

#include<stdio.h>
#define HS 251

int main(void){
  int hs,i;
  int a[HS];

  scanf("%d",&hs);
  for(i=1; i<=hs; i++){
    scanf("%d",&a[i]);
  }
  
  for(i=1; i<=hs; i++){
    printf("node %d: key = %d,",i,a[i]);
    if(i!=1){
      printf("parent key = %d,",a[i/2]);
    }
    if(i*2<=hs){
      printf("left key = %d,",a[i*2]);
    }
    if(i*2+1<=hs){
      printf("right key = %d,",a[i*2+1]);
    }
    printf("\n");
  } 
pirntf("\n");
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:26:1: error: implicit declaration of function 'pirntf'; did you mean 'printf'? [-Wimplicit-function-declaration]
   26 | pirntf("\n");
      | ^~~~~~
      | printf
Language: C

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
typedef struct node{
  int key;
  int parent;
  int left;
  int right;
}node;
int main(){
  int i, n;
  node *N;
  scanf("%d",&n);
  N = malloc(sizeof(struce node)*n);
  for(i = 1; i <= n; i++)
    scanf("%d",&N[i].key);
  for(i = 1; i <= n; i++){
    N[i].parent = N[i/2].key;
    N[i].left = N[2*i].key;
    N[i].right = N[2*i+1].key;
  }

  for(i = 1; i <= n; i++){
    printf("node %d: key = %d, ",i, N[i].key);
  if(i != 1) printf("parent key = %d, ",N[i].parent);
  if(2*i <= n)  printf("left key = %d, ",N[i].left);
  if(2*i+1 <= n) printf("right key = %d, ", N[i].right);
  printf("\n");
  }
  free(N);
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:14:21: error: 'struce' undeclared (first use in this function)
   14 |   N = malloc(sizeof(struce node)*n);
      |                     ^~~~~~
main.c:14:21: note: each undeclared identifier is reported only once for each function it appears in
main.c:14:27: error: expected ')' before 'node'
   14 |   N = malloc(sizeof(struce node)*n);
      |                    ~      ^~~~~
      |                           )
Language: C

#include <stdio.h>

int H[250];
 
int main(){
  int i,n;
  
  scanf("%d",&n);

  for(i=0;i<n;i++) scanf("%d",&H[i]);
 
  for( i = 1 ; i < n+1 ; i++ ){
    printf("node %d: key = %d, ",i,H[i-1]);
    
    if( i / 2 >= 1 )
      printf("parent key = %d, ",H[i/2-1]);
    if( i / 2 = 1 )
      printf("parent key = %d, ",H[i/2-1]);
    if( i * 2 < n+1 )
      printf("left key = %d, ",H[i*2-1]);
    if( i * 2 + 1 < n+1 )
      printf("right key = %d, ",H[i*2+1-1]);
    
    printf("\n");
 
  }
 
 
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:17:15: error: lvalue required as left operand of assignment
   17 |     if( i / 2 = 1 )
      |               ^
Language: C

#include <stdio.h>
#define N 250

main(){
  int i, x, heap[N];
  
  scanf("%d", &x);
  
  for(i = 1; i <= x; i++){
    scanf("%d", &heap[i]);
  }
  
  for(i = 1; i <= x ; i++){
    printf("node %d: key = %d, ", i, heap[i]);
    
    if(i != 1){
      printf("parent key = %d, ", heap[i / 2]);
    }
    
    if(n => i * 2){
      printf("left key = %d, ", heap[2 * i]);
    }
    
    if(n => 1 + i * 2){
      printf("right key = %d, ", heap[2 * i + 1]);
    }
    
    printf("\n");
    
  }
  return 0;
}

Compiler output:
main.c:4:1: error: return type defaults to 'int' [-Wimplicit-int]
    4 | main(){
      | ^~~~
main.c: In function 'main':
main.c:20:8: error: 'n' undeclared (first use in this function)
   20 |     if(n => i * 2){
      |        ^
main.c:20:8: note: each undeclared identifier is reported only once for each function it appears in
main.c:20:11: error: expected expression before '>' token
   20 |     if(n => i * 2){
      |           ^
main.c:24:11: error: expected expression before '>' token
   24 |     if(n => 1 + i * 2){
      |           ^
Language: C

#include<stdio.h>
define MAX 100000

int parent(int i){
return i/2;
}

int left(int i){
return 2*i;
}

int right(int i){
return 2*i+1;
}

int main(void){

int n,i,A[MAX+1];
	
scanf("%d",&n);
for(i=1;i<=n;i++){
scanf("%d",A[i]);	
}	
for(i=1;i<=n;i++){
printf("node %d: key = %d, "i,A[i]);
if(parent(i)>=1){
printf("parent key = %d, ",A[parent(i)]);
}
if(left(i)<=n){
printf("left key = %d, ",A[left(i)]);
}
if(right(i)<=n){
printf("right key = %d, ",A[right(i)]);
}
printf("?\n");
}

return 0;
}

Compiler output:
main.c:2:1: error: unknown type name 'define'
    2 | define MAX 100000
      | ^~~~~~
main.c:2:12: error: expected '=', ',', ';', 'asm' or '__attribute__' before numeric constant
    2 | define MAX 100000
      |            ^~~~~~
main.c: In function 'main':
main.c:18:11: error: 'MAX' undeclared (first use in this function)
   18 | int n,i,A[MAX+1];
      |           ^~~
main.c:18:11: note: each undeclared identifier is reported only once for each function it appears in
main.c:25:29: error: expected ')' before 'i'
   25 | printf("node %d: key = %d, "i,A[i]);
      |       ~                     ^
      |                             )
main.c:26:4: error: implicit declaration of function 'parent' [-Wimplicit-function-declaration]
   26 | if(parent(i)>=1){
      |    ^~~~~~
Language: C

#include<stdio.h>
#define MAX 100000

int parent(int i){
return i/2;
}

int left(int i){
return 2*i;
}

int right(int i){
return 2*i+1;
}

int main(void){

int n,i,A[MAX+1];
	
scanf("%d",&n);
for(i=1;i<=n;i++){
scanf("%d",A[i]);	
}	
for(i=1;i<=n;i++){
printf("node %d: key = %d, "i,A[i]);
if(parent(i)>=1){
printf("parent key = %d, ",A[parent(i)]);
}
if(left(i)<=n){
printf("left key = %d, ",A[left(i)]);
}
if(right(i)<=n){
printf("right key = %d, ",A[right(i)]);
}
printf("?\n");
}

return 0;
}

Compiler output:
main.c: In function 'main':
main.c:25:29: error: expected ')' before 'i'
   25 | printf("node %d: key = %d, "i,A[i]);
      |       ~                     ^
      |                             )
Language: C

#include<stdio.h>
#define MAX 100000

int parent(int i){
return i/2;
}

int left(int i){
return 2*i;
}

int right(int i){
return 2*i+1;
}

int main(void){

int n,i,A[MAX+1];
	
scanf("%d",&n);
for(i=1;i<=n;i++){
scanf("%d",&A[i]);	
}	
for(i=1;i<=n;i++){
printf("node %d: key = %d, "i,A[i]);
if(parent(i)>=1){
printf("parent key = %d, ",A[parent(i)]);
}
if(left(i)<=n){
printf("left key = %d, ",A[left(i)]);
}
if(right(i)<=n){
printf("right key = %d, ",A[right(i)]);
}
printf("?\n");
}

return 0;
}

Compiler output:
main.c: In function 'main':
main.c:25:29: error: expected ')' before 'i'
   25 | printf("node %d: key = %d, "i,A[i]);
      |       ~                     ^
      |                             )
Language: C

#include <stdio.h>

typedef struct{
  int key;
  int parent;
  int left;
  int right;
}node;

main(){
  int i,g;
  node N[250];
  scanf("%d",&g);
  for(i=0;i<g;i++){
    scanf("%d",&N[i].key);
    N[i].parent = 0;
    N[i].left = 0;
    N[i].right = 0;
  }
  for(i=1;i<=g;i++){
    if(i>1)N[i-1].parent = N[i/2-1].key;
    if((i*2)<=g)N[i-1].left = N[i*2-1].key;
    if((i*2+1)<=g)N[i-1].right = N[i*2].key;
  }

  for(i=0;i<g;i++){
    printf("node %d:key = %d,",i+1,N[i].key);
    if(N[i].parent!=0)printf(" parent key = %d,",N[i].parent);
    if(N[i].left!=0)printf(" left key = %d,",N[i].left);
    if(N[i].right!=0)printf(" right key = %d,",N[i].right);
   )printf("\n");
  }
return 0;
}

Compiler output:
main.c:10:1: error: return type defaults to 'int' [-Wimplicit-int]
   10 | main(){
      | ^~~~
main.c: In function 'main':
main.c:31:4: error: expected statement before ')' token
   31 |    )printf("\n");
      |    ^
Language: C

#include<stdio.h>
#define N 250

int parent(i){
  return i/2;
}

 int left(i){
   return 2*i;
 }

 int right(i){
   return 2*i+1;
 }

main(){

  int i, n, H[N];

  scanf("%d",&n);
  for(i=0; i<n; i++){
    scanf("%d",&H[i]);
  }

  for(i=0; i<n; i++){
	printf("node %d: key = %d,",i, H[i]);
	if(parent(i) > 0) printf("parent key = %d, ",A[parent(i)]);
	if(left(i) <= n)printf("left key = %d, ",H[left(i)]);
	if(right(i) <= n)printf("right key = %d, ",H[right(i)]);

	printf("\n");
  }
  return 0;
}

Compiler output:
main.c: In function 'parent':
main.c:4:5: error: type of 'i' defaults to 'int' [-Wimplicit-int]
    4 | int parent(i){
      |     ^~~~~~
main.c: In function 'left':
main.c:8:6: error: type of 'i' defaults to 'int' [-Wimplicit-int]
    8 |  int left(i){
      |      ^~~~
main.c: In function 'right':
main.c:12:6: error: type of 'i' defaults to 'int' [-Wimplicit-int]
   12 |  int right(i){
      |      ^~~~~
main.c: At top level:
main.c:16:1: error: return type defaults to 'int' [-Wimplicit-int]
   16 | main(){
      | ^~~~
main.c: In function 'main':
main.c:27:54: error: 'A' undeclared (first use in this function)
   27 |         if(parent(i) > 0) printf("parent key = %d, ",A[parent(i)]);
      |                                                      ^
main.c:27:54: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include<stdio.h>
#define MAX 251
 
main()
{
  int A[MAX], Z, i;
 
  scanf("%d", &Z);
  for(i=1; i<=Z; i++)
    {
      scanf("%d", &A[i]);
    }
 
  for(i=1; i<=Z; i++)
    {
      printf("node %d: key = %d, ", i, A[i]);
      if(i==1)
    {
      printf("left key = %d, right key = %d, ", A[2*i], A[2*i+1]);
    }
      else if
    {
      printf("parent key = %d, ", A[i/2]);
     
      if(2*i + 2 < Z)
        {
          printf("right key = %d, ", A[2*i+1]);
        }
 if(2*i+1 <Z)
        {
          printf("left key = %d, ", A[2*i]);
        }
    }
      printf("\n");
    }
 
  return 0;
}

Compiler output:
main.c:4:1: error: return type defaults to 'int' [-Wimplicit-int]
    4 | main()
      | ^~~~
main.c: In function 'main':
main.c:22:5: error: expected '(' before '{' token
   22 |     {
      |     ^
      |     (
Language: C

#include<stdio.h>
#define MAX 251
 
main()
{
  int A[MAX], Z, i;
 
  scanf("%d", &Z);
  for(i=1; i<=Z; i++)
    {
      scanf("%d", &A[i]);
    }
 
  for(i=1; i<=Z; i++)
    {
      printf("node %d: key = %d, ", i, A[i]);
      if(i==1)
    {
      printf("left key = %d, right key = %d, ", A[2*i], A[2*i+1]);
    }
      else if
    {
      printf("parent key = %d, ", A[i/2]);
     }
      if(2*i + 2 < Z)
        {
          printf("right key = %d, ", A[2*i+1]);
        }
 if(2*i+1 <Z)
        {
          printf("left key = %d, ", A[2*i]);
        }
    }
      printf("\n");
    }
 
  return 0;
}

Compiler output:
main.c:4:1: error: return type defaults to 'int' [-Wimplicit-int]
    4 | main()
      | ^~~~
main.c: In function 'main':
main.c:22:5: error: expected '(' before '{' token
   22 |     {
      |     ^
      |     (
main.c: At top level:
main.c:37:3: error: expected identifier or '(' before 'return'
   37 |   return 0;
      |   ^~~~~~
main.c:38:1: error: expected identifier or '(' before '}' token
   38 | }
      | ^
Language: C

#define MAX 250
 
int main(){
  int h,i,a[MAX];
 
  scanf("%d" ,&h);
  for(i = 0 ; i < h ; i++){
    scanf("%d" , &a[i]);
  }
 
  for(i = 0 ; i < h ; i++){
    printf("node %d: key = %d, " ,i+1 ,a[i]);
 
    if(i){
      printf("parent key = %d, " ,a[(i+1)/2-1]);
    }
 
   
    if(2*i+1 < =h){
      printf("right key = %d, " ,a[2*i+2]);
    }
 if(2*i <= h){
      printf("left key = %d, " ,a[2*i+1]);
    }
    printf("\n");
  }
 
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:6:3: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
    6 |   scanf("%d" ,&h);
      |   ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | #define MAX 250
main.c:6:3: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
    6 |   scanf("%d" ,&h);
      |   ^~~~~
main.c:6:3: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:12:5: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
   12 |     printf("node %d: key = %d, " ,i+1 ,a[i]);
      |     ^~~~~~
main.c:12:5: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:12:5: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:12:5: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:19:16: error: expected expression before '=' token
   19 |     if(2*i+1 < =h){
      |                ^
Language: C

#Include<stdio.h>
#define N  500

int main (void){
  int A[N],num,i=0;
  
  scanf("%d",&num);
  for (i=1;i<=num;i++){
    scanf("%d",&A[i]);
  }
  for(i=1;i<=num;i++){
    printf("node %d: key = %d, ",i,A[i]);
    if(i!=1)printf("parent key = %d, ",A[i/2]);
    if(i*2<=num)printf("left key = %d, ",A[i*2]);
    if(i*2+1<=num)printf("right key = %d, ",A[i*2+1]);
    printf("\n");
  }
    return 0;
}

Compiler output:
main.c:1:2: error: invalid preprocessing directive #Include; did you mean #include?
    1 | #Include<stdio.h>
      |  ^~~~~~~
      |  include
main.c: In function 'main':
main.c:7:3: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
    7 |   scanf("%d",&num);
      |   ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | #Include<stdio.h>
main.c:7:3: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
    7 |   scanf("%d",&num);
      |   ^~~~~
main.c:7:3: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:12:5: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
   12 |     printf("node %d: key = %d, ",i,A[i]);
      |     ^~~~~~
main.c:12:5: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:12:5: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:12:5: note: include '<stdio.h>' or provide a declaration of 'printf'
Language: C

#include <stdlib.h>
#include <stdio.h>

int main(){
   int H, i, array;

    scanf("%d", &H);
    array = (int*)malloc(sizeof(array));

    for(i=0; i < H; i++){
        scanf("%d", &array[i]);
    }

    for(i = 1; i <= H; i++){
        printf("node %d:", i);
        printf(" key = %d,", array[i-1]);
        if(i/2 > 0) printf(" parent key = %d,", array[i/2]);
        if(2*i < H) printf(" left key = %d,", array[2*i]);
        if(2*i - 1 < H) printf(" right key = %d,", array[2*i - 1]);
    }
    free(array);
    return 0;
}

Compiler output:
main.c: In function 'main':
main.c:8:11: error: assignment to 'int' from 'int *' makes integer from pointer without a cast [-Wint-conversion]
    8 |     array = (int*)malloc(sizeof(array));
      |           ^
main.c:11:27: error: subscripted value is neither array nor pointer nor vector
   11 |         scanf("%d", &array[i]);
      |                           ^
main.c:16:35: error: subscripted value is neither array nor pointer nor vector
   16 |         printf(" key = %d,", array[i-1]);
      |                                   ^
main.c:17:54: error: subscripted value is neither array nor pointer nor vector
   17 |         if(i/2 > 0) printf(" parent key = %d,", array[i/2]);
      |                                                      ^
main.c:18:52: error: subscripted value is neither array nor pointer nor vector
   18 |         if(2*i < H) printf(" left key = %d,", array[2*i]);
      |                                                    ^
main.c:19:57: error: subscripted value is neither array nor pointer nor vector
   19 |         if(2*i - 1 < H) printf(" right key = %d,", array[2*i - 1]);
      |                                                         ^
main.c:21:10: error: passing argument 1 of 'free' makes pointer from integer without a cast [-Wint-conversion]
   21 |     free(array);
      |          ^~~~~
      |          |
      |          int
In file included from main.c:1:
/usr/include/stdlib.h:687:25: note: expected 'void *' but argument is of type 'int'
  687 | extern void free (void *__ptr) __THROW;
      |                   ~~~~~~^~~~~
Language: C

#define FOR(i,a,b) for (int i=(a);i<(b);i++)
#define RFOR(i,a,b) for (int i=(b)-1;i>=(a);i--)
#define REP(i,n) for (int i=0;i<(n);i++)
#define RREP(i,n) for (int i=(n)-1;i>=0;i--)

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>
int nodes[251];
 
main(){
 
    int i, n;
 
    scanf("%d", &n);
 
    for(i=1; i<=n; i++){
        scanf("%d", &nodes[i]);
    }
     
    for(i=1; i<=n; i++){
        printf("node %d: ", i);
        printf("key = %d, ", nodes[i]);
        if(parentNode(i-i%2) > 0)
            printf("parent key = %d, ", nodes[parentNode(i-i%2)]);
        if(leftChild(i) <= n)
            printf("left key = %d, ", nodes[leftChild(i)]);
        if(rightChild(i) <= n)
            printf("right key = %d, ", nodes[rightChild(i)]);
        printf("\n");
    }
     
    return 0;
     
}

Compiler output:
main.c:13:1: error: return type defaults to 'int' [-Wimplicit-int]
   13 | main(){
      | ^~~~
main.c: In function 'main':
main.c:26:12: error: implicit declaration of function 'parentNode' [-Wimplicit-function-declaration]
   26 |         if(parentNode(i-i%2) > 0)
      |            ^~~~~~~~~~
main.c:28:12: error: implicit declaration of function 'leftChild' [-Wimplicit-function-declaration]
   28 |         if(leftChild(i) <= n)
      |            ^~~~~~~~~
main.c:30:12: error: implicit declaration of function 'rightChild' [-Wimplicit-function-declaration]
   30 |         if(rightChild(i) <= n)
      |            ^~~~~~~~~~
Language: C

#define FOR(i,a,b) for (int i=(a);i<(b);i++)
#define RFOR(i,a,b) for (int i=(b)-1;i>=(a);i--)
#define REP(i,n) for (int i=0;i<(n);i++)
#define RREP(i,n) for (int i=(n)-1;i>=0;i--)

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>
int nodes[251];
 
int main(){
 
    int i, n;
 
    scanf("%d", &n);
 
    for(i=1; i<=n; i++){
        scanf("%d", &nodes[i]);
    }
     
    for(i=1; i<=n; i++){
        printf("node %d: ", i);
        printf("key = %d, ", nodes[i]);
        if(parentNode(i-i%2) > 0)
            printf("parent key = %d, ", nodes[parentNode(i-i%2)]);
        if(leftChild(i) <= n)
            printf("left key = %d, ", nodes[leftChild(i)]);
        if(rightChild(i) <= n)
            printf("right key = %d, ", nodes[rightChild(i)]);
        printf("\n");
    }
     
    return 0;
     
}

Compiler output:
main.c: In function 'main':
main.c:26:12: error: implicit declaration of function 'parentNode' [-Wimplicit-function-declaration]
   26 |         if(parentNode(i-i%2) > 0)
      |            ^~~~~~~~~~
main.c:28:12: error: implicit declaration of function 'leftChild' [-Wimplicit-function-declaration]
   28 |         if(leftChild(i) <= n)
      |            ^~~~~~~~~
main.c:30:12: error: implicit declaration of function 'rightChild' [-Wimplicit-function-declaration]
   30 |         if(rightChild(i) <= n)
      |            ^~~~~~~~~~
Language: C

#include<stdio.h>

int main(){
  int H, A[100000 + 1] = {0}, id, k, pk, lk, rk, i;

  scanf("%d", &H);
  for(i = 1; i <= H; i++)
    scanf("%d", &A[i]);

  for(id = 1; id <= H; id++){
    printf("node %d: ", id);
    k = A[id];
    printf("key = %d,", k);
    if(id / 2 != 0)
      printf("parent key = %d,", A[id / 2]);
    lk = rk = id * 2;
    rk++;
    if(lk <= H){
      printf("left key = %d, ", A[lk]);
    }
    if(rk <= H){ 
      printf("right key = %d,\n", A[rk]);
    }else{
      printf("\n");
    }
  }
  return 0;

Compiler output:
main.c: In function 'main':
main.c:27:3: error: expected declaration or statement at end of input
   27 |   return 0;
      |   ^~~~~~
Language: C

#include <stdio.h>
#include <stdlib.h>

int left(int i){ return i*2; }

int right(int i){ return i*2 + 1; }

int parent(int i){ return i/2; }

int main(void){
  int i,n;
  int *Heap;


  // input and alloc
  scanf("%d",&n);
  Heap = (int *)malloc(sizeof(int) * n);
  for(i=0; i<n; i++) scanf("%d ",&Heap[i]);

  // output
  for(i=0; i<n; i++) {
    printf("node %d: key = %d, ", i, Heap[i]);
    if(i != 1) printf("parent key = %d, ", parent(i));
    if(left(i) > n) printf("left key = %d, ", left(i));
    if(right(i) > n) printf("right key = %d, "right(i));
    printf("\n");
  }

  free(Heap);

  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:25:47: error: expected ')' before 'right'
   25 |     if(right(i) > n) printf("right key = %d, "right(i));
      |                            ~                  ^~~~~
      |                                               )
Language: C

#include<stdio.h>
#define MAX 100000

int main(){
int H,i,A[MAX+1];

scanf("%d",&H);
for(i=1;i<=H;i++)scanf("%d",&A[i]);

for(i=1;i<=H;i++){
printf("node %d: key = %d,",i,A[i]);
if(i/2>=1)printf("parent key = %d,",A[i/2]);
if(2*i<=H)printf("left key = %d,",A[2*i]);
if(2*i+1<=H)printf("right key = %d,"A[2*i+1]);
printf("\n");
}
return 0;
}

Compiler output:
main.c: In function 'main':
main.c:14:37: error: expected ')' before 'A'
   14 | if(2*i+1<=H)printf("right key = %d,"A[2*i+1]);
      |                   ~                 ^
      |                                     )
Language: C

}

int right(int i)
{
  return A[2*i+1];
}

int main()
{
  int p,r,l,i;

  scanf("%d",&h);

  for(i=1;i<=h;i++){

    scanf("%d",&A[i]);

  }


  for(i=1;i<=h;i++){

    p=parent(i);
    l=left(i);
    r=right(i);


    printf("node %d: key=%d, ",i,A[i]);
  
    if(p!=0) printf("parent key=%d, ",p);

  if(p!=0 && l==0) printf("\n");

  if(l!=0) printf("left key=%d, ",l);

  if(r!=0) printf("right key=%d, \n",r);

  }

  return 0;
}

Compiler output:
main.c:1:1: error: expected identifier or '(' before '}' token
    1 | }
      | ^
main.c: In function 'right':
main.c:5:10: error: 'A' undeclared (first use in this function)
    5 |   return A[2*i+1];
      |          ^
main.c:5:10: note: each undeclared identifier is reported only once for each function it appears in
main.c: In function 'main':
main.c:12:3: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
   12 |   scanf("%d",&h);
      |   ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | }
main.c:12:3: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
   12 |   scanf("%d",&h);
      |   ^~~~~
main.c:12:3: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:12:15: error: 'h' undeclared (first use in this function)
   12 |   scanf("%d",&h);
      |               ^
main.c:16:17: error: 'A' undeclared (first use in this function)
   16 |     scanf("%d",&A[i]);
      |                 ^
main.c:23:7: error: implicit declaration of function 'parent' [-Wimplicit-function-declaration]
   23 |     p=parent(i);
      |       ^~~~~~
main.c:24:7: error: implicit declaration of function 'left' [-Wimplicit-function-declaration]
   24 |     l=left(i);
      |       ^~~~
main.c:28:5: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
   28 |     printf("node %d: key=%d, ",i,A[i]);
      |     ^~~~~~
main.c:28:5: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:28:5: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:28:5: note: include '<stdio.h>' or provide a declaration of 'printf'
Language: C

int main() {
   
  int i,n,A[N];
  int parent,left,right;
   
  scanf("%d",&n);
  for(i=1;i<=n;i++)
    scanf("%d",&A[i]);
   
  for(i=1;i<=n;i++) {
    parent = i/2;
    left = 2*i;
    right = 2*i+1;
     
    printf("node %d: key = %d, ",i,A[i]); 
    if(i != 1)
      printf("parent key = %d, ",A[parent]);
     
    if(left <= n)
      printf("left key = %d, ",A[left]);
     
    if(right <= n)
      printf("right key = %d, ",A[right]); 
     
    printf("\n");
  }
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:3:13: error: 'N' undeclared (first use in this function)
    3 |   int i,n,A[N];
      |             ^
main.c:3:13: note: each undeclared identifier is reported only once for each function it appears in
main.c:6:3: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
    6 |   scanf("%d",&n);
      |   ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | int main() {
main.c:6:3: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
    6 |   scanf("%d",&n);
      |   ^~~~~
main.c:6:3: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:15:5: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
   15 |     printf("node %d: key = %d, ",i,A[i]);
      |     ^~~~~~
main.c:15:5: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:15:5: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:15:5: note: include '<stdio.h>' or provide a declaration of 'printf'
Language: C

#include<stdio.h>
int main()
{
  int i,h,a[250];
  
  scanf("%d",&h);
  for(i=1;i<=h;i++){
    scanf("%d",&a[i]);

  }

  for(i=1;i<=h;i++){
    printf("node %d:key = %d, ",i,a[i]);
    if(i!=1){
      printf("parent key = %d, ",a[i/2]);
    }
    if(2*i<=h){
      printf("left key = %d, ",a[2*i]);
    }
    if(2*i+1)<=h){
      printf("right key = %d, ",a[2*i+1]);
    }
    printf("\n");
  }
  return 0;
}

Compiler output:
main.c: In function 'main':
main.c:20:14: error: expected expression before '<=' token
   20 |     if(2*i+1)<=h){
      |              ^~
main.c:20:17: error: expected statement before ')' token
   20 |     if(2*i+1)<=h){
      |                 ^
Language: C

#include<stdio.h>

int main()
{
int i,j,k,A[250];
scanf("%d",&n);

A[0]=2000000000;


for(i=1;i<=n;i++)
{
scanf("%d",&A[i]);
}

for(i=1:i<=n;i++)
{
printf("node %d: key = %d, ",i,A[i]);
if(A[i/2]!=2000000000)
{
printf("parent key = %d, ",A[i/2]);
}

if(i*2<=n&&A[i*2]!=2000000000)
{
printf("left key = %d, "A[i*2]);
}


if((i*2+1)<=n&&A[i*2+1]!=2000000000)
{
printf("right key = %d, ",A[i*2+1]);
}
printf("\n");
}
return 0;



}


}

Compiler output:
main.c: In function 'main':
main.c:6:13: error: 'n' undeclared (first use in this function)
    6 | scanf("%d",&n);
      |             ^
main.c:6:13: note: each undeclared identifier is reported only once for each function it appears in
main.c:16:8: error: expected ';' before ':' token
   16 | for(i=1:i<=n;i++)
      |        ^
      |        ;
main.c:16:17: error: expected ';' before ')' token
   16 | for(i=1:i<=n;i++)
      |                 ^
      |                 ;
main.c:26:25: error: expected ')' before 'A'
   26 | printf("left key = %d, "A[i*2]);
      |       ~                 ^
      |                         )
main.c: At top level:
main.c:43:1: error: expected identifier or '(' before '}' token
   43 | }
      | ^
Language: C

#include<stdio.h>
#define NIL 2000000000
int main()
{
int i,j,k,A[250];
scanf("%d",&n);

A[0]=NIL;


for(i=1;i<=n;i++)
{
scanf("%d",&A[i]);
}

for(i=1:i<=n;i++)
{
printf("node %d: key = %d, ",i,A[i]);
if(A[i/2]!=NIL)
{
printf("parent key = %d, ",A[i/2]);
}

if(i*2<=n&&A[i*2]!=NIL)
{
printf("left key = %d, "A[i*2]);
}


if((i*2+1)<=n&&A[i*2+1]!=NIL)
{
printf("right key = %d, ",A[i*2+1]);
}
printf("\n");
}
return 0;



}


}

Compiler output:
main.c: In function 'main':
main.c:6:13: error: 'n' undeclared (first use in this function)
    6 | scanf("%d",&n);
      |             ^
main.c:6:13: note: each undeclared identifier is reported only once for each function it appears in
main.c:16:8: error: expected ';' before ':' token
   16 | for(i=1:i<=n;i++)
      |        ^
      |        ;
main.c:16:17: error: expected ';' before ')' token
   16 | for(i=1:i<=n;i++)
      |                 ^
      |                 ;
main.c:26:25: error: expected ')' before 'A'
   26 | printf("left key = %d, "A[i*2]);
      |       ~                 ^
      |                         )
main.c: At top level:
main.c:43:1: error: expected identifier or '(' before '}' token
   43 | }
      | ^
Language: C

#include<stdio.h>
#define NIL 2000000000
int main()
{
int i,n,A[250];
scanf("%d",&n);

A[0]=NIL;


for(i=1;i<=n;i++)
{
scanf("%d",&A[i]);
}

for(i=1:i<=n;i++)
{
printf("node %d: key = %d, ",i,A[i]);
if(A[i/2]!=NIL)
{
printf("parent key = %d, ",A[i/2]);
}

if(i*2<=n&&A[i*2]!=NIL)
{
printf("left key = %d, "A[i*2]);
}


if((i*2+1)<=n&&A[i*2+1]!=NIL)
{
printf("right key = %d, ",A[i*2+1]);
}
printf("\n");
}
return 0;



}


}

Compiler output:
main.c: In function 'main':
main.c:16:8: error: expected ';' before ':' token
   16 | for(i=1:i<=n;i++)
      |        ^
      |        ;
main.c:16:17: error: expected ';' before ')' token
   16 | for(i=1:i<=n;i++)
      |                 ^
      |                 ;
main.c:26:25: error: expected ')' before 'A'
   26 | printf("left key = %d, "A[i*2]);
      |       ~                 ^
      |                         )
main.c: At top level:
main.c:43:1: error: expected identifier or '(' before '}' token
   43 | }
      | ^
Language: C

#include<stdio.h>
#define NIL 2000000000
int main()
{
int i,n,A[250];
scanf("%d",&n);

A[0]=NIL;


for(i=1;i<=n;i++)
{
scanf("%d",&A[i]);
}

for(i=1:i<=n;i++)
{
printf("node %d: key = %d, ",i,A[i]);
if(A[i/2]!=NIL)
{
printf("parent key = %d, ",A[i/2]);
}

if(i*2<=n&&A[i*2]!=NIL)
{
printf("left key = %d, ",A[i*2]);
}


if((i*2+1)<=n&&A[i*2+1]!=NIL)
{
printf("right key = %d, ",A[i*2+1]);
}
printf("\n");
}
return 0;



}


}

Compiler output:
main.c: In function 'main':
main.c:16:8: error: expected ';' before ':' token
   16 | for(i=1:i<=n;i++)
      |        ^
      |        ;
main.c:16:17: error: expected ';' before ')' token
   16 | for(i=1:i<=n;i++)
      |                 ^
      |                 ;
main.c: At top level:
main.c:43:1: error: expected identifier or '(' before '}' token
   43 | }
      | ^
Language: C

#include <stdio.h>
#define H 250

struct Node{
  int id;
  int k;
  int pk;
  int lk;
  int rk;
};

typedef struct Node node;
int n;
node s[H];

void heep();

int main()
{
  int i;

  scanf("%d", &n);

  for(i=1;i<=n;i++){
    scanf("%d", &s[i].k);
    s[i].id = i;
  }
  
  heep();

  return 0;
}

void heep()
{
  int i;
  
  for(i=1;i<=n;i++){
    s[i].pk = s[i/2].k;
    s[i].lk = s[2*i].k;
    s[i].rk = s[2*i+1].k;
    if(i>=) break;
  }

  for(i=1;i<=n;i++){
    printf("node %d: key = %d, ", s[i].id, s[i].k);
    if(s[i].pk!=0)
      printf("parent key = %d, ", s[i].pk);
    if(s[i].lk!=0)
       printf("left key = %d, ", s[i].lk); 
    if(s[i].rk!=0)
      printf("right key = %d, ", s[i].rk);
    printf("\n");
  }
}

Compiler output:
main.c: In function 'heep':
main.c:42:11: error: expected expression before ')' token
   42 |     if(i>=) break;
      |           ^
Language: C

#include<stdio.h>
#define NIL 2000000000
int main()
{
int i,n,A[250];
scanf("%d",&n);

A[0]=NIL;


for(i=1;i<=n;i++)
{
scanf("%d",&A[i]);
}

for(i=1:i<=n;i++)
{
printf("node %d: key = %d, ",i,A[i]);
if(A[i/2]!=NIL)
{
printf("parent key = %d, ",A[i/2]);
}

if(i*2<=n&&A[i*2]!=NIL)
{
printf("left key = %d, ",A[i*2]);
}


if((i*2+1)<=n&&A[i*2+1]!=NIL)
{
printf("right key = %d, ",A[i*2+1]);
}
printf("\n");
}
return 0;






}

Compiler output:
main.c: In function 'main':
main.c:16:8: error: expected ';' before ':' token
   16 | for(i=1:i<=n;i++)
      |        ^
      |        ;
main.c:16:17: error: expected ';' before ')' token
   16 | for(i=1:i<=n;i++)
      |                 ^
      |                 ;
Language: C

include<stdio.h>
#define MAX 100000
 
int parent;
int left;
int right;
 
int main(){
  int h,i,A[MAX+1];
 
  scanf("%d",&h);
 
  for(i=1;i<=h;i++){
    scanf("%d",&A[i]);
  }
 
  for(i=1;i<=h;i++){
    printf("node %d: key = %d, ",i,A[i]);
    if(parent(i)>=1){
      printf("parent key = %d, ",A[parent(i)]);
    }
    if(left(i)<=h){
      printf("left key = %d, ",A[left(i)]); 
    }
    if(right(i)<=h){
      printf("right key = %d, ",A[right(i)]);
    }
    printf("\n");
  }
 
  return 0;
}
 

Compiler output:
main.c:1:8: error: expected '=', ',', ';', 'asm' or '__attribute__' before '<' token
    1 | include<stdio.h>
      |        ^
main.c: In function 'main':
main.c:11:3: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
   11 |   scanf("%d",&h);
      |   ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | include<stdio.h>
main.c:11:3: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
   11 |   scanf("%d",&h);
      |   ^~~~~
main.c:11:3: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:18:5: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
   18 |     printf("node %d: key = %d, ",i,A[i]);
      |     ^~~~~~
main.c:18:5: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:18:5: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:18:5: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:19:8: error: implicit declaration of function 'parent' [-Wimplicit-function-declaration]
   19 |     if(parent(i)>=1){
      |        ^~~~~~
main.c:22:8: error: called object 'left' is not a function or function pointer
   22 |     if(left(i)<=h){
      |        ^~~~
main.c:5:5: note: declared here
    5 | int left;
      |     ^~~~
main.c:23:34: error: called object 'left' is not a function or function pointer
   23 |       printf("left key = %d, ",A[left(i)]);
      |                                  ^~~~
main.c:5:5: note: declared here
    5 | int left;
      |     ^~~~
main.c:25:8: error: called object 'right' is not a function or function pointer
   25 |     if(right(i)<=h){
      |        ^~~~~
main.c:6:5: note: declared here
    6 | int right;
      |     ^~~~~
main.c:26:35: error: called object 'right' is not a function or function pointer
   26 |       printf("right key = %d, ",A[right(i)]);
      |                                   ^~~~~
main.c:6:5: note: declared here
    6 | int right;
      |     ^~~~~
Language: C

include<stdio.h>
#define MAX 100000
 
int parent(int);
int left(int);
int right(int);
 
int main(){
  int H,i,A[MAX+1];
 
  scanf("%d",&H);
 
  for(i=1;i<=H;i++){
    scanf("%d",&A[i]);
  }
 
  for(i=1;i<=H;i++){
    printf("node %d: key = %d, ",i,A[i]);
    if(parent(i)>=1){
      printf("parent key = %d, ",A[parent(i)]);
    }
    if(left(i)<=h){
      printf("left key = %d, ",A[left(i)]); 
    }
    if(right(i)<=H){
      printf("right key = %d, ",A[right(i)]);
    }
   
  }
 
  return 0;
}
 
int parent(int x){
  return x/2;
}
 
int left(int x){
  return 2*x;
}
 
int right(int x){
  return 2*x+1;
}

Compiler output:
main.c:1:8: error: expected '=', ',', ';', 'asm' or '__attribute__' before '<' token
    1 | include<stdio.h>
      |        ^
main.c: In function 'main':
main.c:11:3: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
   11 |   scanf("%d",&H);
      |   ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | include<stdio.h>
main.c:11:3: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
   11 |   scanf("%d",&H);
      |   ^~~~~
main.c:11:3: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:18:5: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
   18 |     printf("node %d: key = %d, ",i,A[i]);
      |     ^~~~~~
main.c:18:5: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:18:5: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:18:5: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:19:8: error: implicit declaration of function 'parent' [-Wimplicit-function-declaration]
   19 |     if(parent(i)>=1){
      |        ^~~~~~
main.c:22:17: error: 'h' undeclared (first use in this function)
   22 |     if(left(i)<=h){
      |                 ^
main.c:22:17: note: each undeclared identifier is reported only once for each function it appears in