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

#include<stdio.h>
#include<stdlib.h>
int partition(int*,int,int);
int main(){
    int n,i,k;
    scanf("%d",&n);
        int A[n];
        for(i=0;i<n;i++){
            scanf("%d",&A[i])
        }
k=partition(*A,0,n-1);
for(i=0;i<n;i++){
    if(i==k)printf("[%d] ",A[i]);
    if(i!=n-1)printf("%d ",A[i]);
    else printf("%d$n",A[i]);
}
return 0;
    }

    int partition(int *a,int q,int r){
        int x,i,j,k;
        x=a[r];
        i=q-1;
        for(j=q;i<r-1;j++){
            if(a[j]<=x){
        i=i+1;
        k=a[i]; 
        a[i]=a[j];
        a[j]=k;
        }
        a[r]=a[i+i];
        a[i+1]=x;
            }
            return i+1;

}


Compiler output:
main.c: In function 'main':
main.c:9:30: error: expected ';' before '}' token
    9 |             scanf("%d",&A[i])
      |                              ^
      |                              ;
   10 |         }
      |         ~                     
main.c:11:13: error: passing argument 1 of 'partition' makes pointer from integer without a cast [-Wint-conversion]
   11 | k=partition(*A,0,n-1);
      |             ^~
      |             |
      |             int
main.c:3:15: note: expected 'int *' but argument is of type 'int'
    3 | int partition(int*,int,int);
      |               ^~~~
Language: C

#include<stdio.h>
#define MAX 100000
int A[MAX],n;
int partition(int p,int r){
  int x,i,j,t;
  x=A[r];
  i=p-1;
  for(j=p;j<r;j++){
    if(A[j]<=x){
      i++;
      t=A[i];A[i]=A[j];A[j]=t;
    }
  }
  t=A[i+1];A[i+1]=A[r];A[r]=t;
  return i+1;
}
int main(){
  int i,q;
  scanf("%d",&n);
  for(i=0;i<n;i++)scanf("%d",&A[i]);
  q=partiton(0,n-1);
  for(i=0;i<n;i++){
    if(i)printf(" ");
    if(i==q)printf("[");
    printf("%d",A[i]);
    if(i==q)printf("]");
  }
  printf("\n");
  return 0;
}



Compiler output:
main.c: In function 'main':
main.c:21:5: error: implicit declaration of function 'partiton'; did you mean 'partition'? [-Wimplicit-function-declaration]
   21 |   q=partiton(0,n-1);
      |     ^~~~~~~~
      |     partition
Language: C

#include<stdio.h>
 
void swap(int* a,int* b){
  int tmp=*a;
  *a=*b;
  *b=tmp;
}
 
int partition(int *A,int p,int q){
	int x = *(A + q);
  int i=p-1,j;
  for(j=p;j<r;j++){
    if(*(A + j)<=x){
      i++;
      swap(A+i,&A + j);
    }
  }
  swap(A+i+1, A+q);
  return i+1;
}
 
int main(){
  int n,i,a;
  int A[100000];
	
  scanf("%d",&n);
	
  for(i=0;i<n;i++)scanf("%d",&A[i]);
  x=partition(A,0,n-1);
	
  for(i=0;i<n;i++){
    if(i)printf(" ");
  	
    if(i==a)printf("[");
 
    printf("%d",A[i]);
  	
    if(i==a)printf("]");
  }
  printf("\n");
  return 0;
}



Compiler output:
main.c: In function 'partition':
main.c:12:13: error: 'r' undeclared (first use in this function)
   12 |   for(j=p;j<r;j++){
      |             ^
main.c:12:13: note: each undeclared identifier is reported only once for each function it appears in
main.c:15:19: error: passing argument 2 of 'swap' from incompatible pointer type [-Wincompatible-pointer-types]
   15 |       swap(A+i,&A + j);
      |                ~~~^~~
      |                   |
      |                   int **
main.c:3:23: note: expected 'int *' but argument is of type 'int **'
    3 | void swap(int* a,int* b){
      |                  ~~~~~^
main.c: In function 'main':
main.c:29:3: error: 'x' undeclared (first use in this function)
   29 |   x=partition(A,0,n-1);
      |   ^
Language: C

#include<stdio.h>
 
void swap(int* a,int* b){
  int tmp=*a;
  *a=*b;
  *b=tmp;
}
 
int partition(int *A,int p,int q){
	int x = *(A + q);
  int i=p-1,j;
  for(j=p;j<q;j++){
    if(*(A + j)<=x){
      i++;
      swap(A+i,&A + j);
    }
  }
  swap(A+i+1, A+q);
  return i+1;
}
 
int main(){
  int n,i,a;
  int A[100000];
	
  scanf("%d",&n);
	
  for(i=0;i<n;i++)scanf("%d",&A[i]);
  x=partition(A,0,n-1);
	
  for(i=0;i<n;i++){
    if(i)printf(" ");
  	
    if(i==a)printf("[");
 
    printf("%d",A[i]);
  	
    if(i==a)printf("]");
  }
  printf("\n");
  return 0;
}



Compiler output:
main.c: In function 'partition':
main.c:15:19: error: passing argument 2 of 'swap' from incompatible pointer type [-Wincompatible-pointer-types]
   15 |       swap(A+i,&A + j);
      |                ~~~^~~
      |                   |
      |                   int **
main.c:3:23: note: expected 'int *' but argument is of type 'int **'
    3 | void swap(int* a,int* b){
      |                  ~~~~~^
main.c: In function 'main':
main.c:29:3: error: 'x' undeclared (first use in this function)
   29 |   x=partition(A,0,n-1);
      |   ^
main.c:29:3: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include <stdio.h>
#define MAX 100000

int A[MAX], n;

int partition(int, int);
int main()
{
    int i, q;

    scanf("%d", &n);
    for (i = 0; i < n; i++)
        scanf("%d", &A[i]);
    q = partition(0, n - 1);

    for (i = 0; i < n; i++)
    {
        if (i)
            printf(" ");
        if (i == q)
            printf("[");
        printf("%d", A[i]);
        if (i == q)
            printf("]");
    }
    printf("\n");
    return 0;
}
int partition(int a, int b)
{
    int x, i, j, t;
    x = A[b];
    i = a - 1;
    for (j = a; j < b; j++)
    {
        if (A[j <= x])
        {
            i++;
            t = A[i];
            A[i] = A[j];
            A[j] = t;
        }
    }
    t = A[i + 1];
    A[i + 1] = A[r];
    A[r] = t;
    return i + 1;
}


Compiler output:
main.c: In function 'partition':
main.c:45:18: error: 'r' undeclared (first use in this function)
   45 |     A[i + 1] = A[r];
      |                  ^
main.c:45:18: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include <stdio.h>
#define MAX 100000

int A[MAX],n;

int partition(int p,int r){
  int x,i,j,t;
  x=A[r];
  i=A[r];
  i=p-1;
  for(j=0p;j<r;j++){
    if(A[j]<=x){
      i++;
      t=A[i];
      A[i]=A[j];
      A[j]=t;
    }
  }
  t=A[i+1];
  A[i+1]=A[r];
  A[r]=t;
  return i+1;
}

int main(){
  int i,q;

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

  q=partition(0,n-1);

  for(i=0;i<n;i++){
    if(i) printf(" ");
    if(i==q) printf("[");
    printf("%d",A[i]);
    if(i==q) printf("]");
  }
  printf("\n");
  
  return 0;
}


Compiler output:
main.c: In function 'partition':
main.c:11:9: error: invalid suffix "p" on integer constant
   11 |   for(j=0p;j<r;j++){
      |         ^~
Language: C

include <stdio.h>
int main(){
  int N,A[100000],i,j=0,k=0,x,temp;
  scanf("%d",&N);
  for(i=0;i<N;i++)
    scanf("%d",&A[i]);
  x=A[N-1];
  for(i=0;i<N;i++){
    if(A[i]>x)j++;
    else{
      temp=A[k];
      A[k]=A[i];
      A[i]=temp;
      k++;
    }
  }
  for(i=0;i<N;i++){
    printf("%d",A[i]);
    if(i==N-1){
      printf("\n");
      break;
    }
    printf(" ");
  }
  return 0;
}




Compiler output:
main.c:1:9: error: expected '=', ',', ';', 'asm' or '__attribute__' before '<' token
    1 | include <stdio.h>
      |         ^
Language: C

#include<stdio.h>
#define M 100000
int main()
{
int i,j,n,a=0,b=0;
int A[M],B[M],C[M];
scanf("%d",&n);
for(i=0;i<n;i++){
scanf("%d",&A[i]);
}
for(j=0;j<n-1;j++){
if(A[j]<A[n]){
B[j]=A[j];
a++;
}
 else C[j]=A[j];
b++;
}
for(i=0;i<a;i++){
printf("%d",B[i]);
}
printf("[%d]",A[n])
for(i=0;i<b;i++){
printf("%d",C[i]);
}
printf("\n");
return 0;
}



Compiler output:
main.c: In function 'main':
main.c:22:20: error: expected ';' before 'for'
   22 | printf("[%d]",A[n])
      |                    ^
      |                    ;
   23 | for(i=0;i<b;i++){
      | ~~~
Language: C

	#include<stdio.h>

	int A[100000];

	int partition(int A[],int p,int r){
	int x = A[r-1];
	int i = p;
	for(int j = p; j<r-1;j++){
	if(A[j] <= x){
	int temp = A[i];
	A[i] = A[j];
	A[j] = temp;
	i++;
	}
	}
	int temp = A[i];
	A[i] = A[r-1];
	A[r-1] = temp;
	 return i;
	}

	int main(){
	  int n;
	scanf("%d",n);
	for(int i=0;i<n;i++){
	scanf("%d",&A[i]);
	}
	int ip = partition(A,0,n);
	for(int i=0; i<n; i++){
	if(i == ip){
	 printf("%d",A[i]);
	} else { printf("%d",A[i]);
	putchar(i < n -1? ' ' : '\n');
	}
	} 


	




Compiler output:
main.c: In function 'main':
main.c:35:9: error: expected declaration or statement at end of input
   35 |         }
      |         ^
Language: C

	#include<stdio.h>

	int A[100000];

	int partition(int A[],int p,int r){
	int x = A[r-1];
	int i = p;
	for(int j = p; j<r-1;j++){
	if(A[j] <= x){
	int temp = A[i];
	A[i] = A[j];
	A[j] = temp;
	i++;
	}
	}
	int temp = A[i];
	A[i] = A[r-1];
	A[r-1] = temp;
	 return i;
	}

	int main(){
	  int n;
	scanf("%d",n);
	for(int i=0;i<n;i++){
	scanf("%d",&A[i]);
	}
	int ip = partition(A,0,n);
	for(int i=0; i<n; i++){
	if(i == ip){
	 printf("[%d]",A[i]);
	} else { printf("%d",A[i]);
	putchar(i < n -1? ' ' : '\n');
	}
	}


	




Compiler output:
main.c: In function 'main':
main.c:35:9: error: expected declaration or statement at end of input
   35 |         }
      |         ^
Language: C

#include<stdio.h>

#define MAX 100000
 
void swap( int *pa, int *pb )
{
	int t;
	
	t=*pa;
	*pa=*pb;
	*pb=t;
	
	return;
}

int partition( int A[], int p, int r )
{
	int x;
	int i,j;
	
	x=A[r];
	i=p-1;
	for( j=p; j<r; j++ ) {
		if( A[j] <= x ) {
			i++;
			swap( &A[i], &A[j] );
		}
	}
	swap( &A[i+1], &A[r] );
	
	return i+1;
}

Compiler output:
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/14/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x17): undefined reference to `main'
collect2: error: ld returned 1 exit status
Language: C

stdrsv1122{s1220049}76:	#include <stdio.h>
#define N 100000

int main(){
  int a[N];
  int change, n, x, i, j;

  scanf("%d", &n);
  for(j = 0; j < n; j++) scanf("%d", &a[j]);

  x = a[n - 1];
  i = -1;

  for(j = 0; j < n - 1; j++){
    if(a[j] <= x){
      i++;
      change = a[i];
      a[i] = a[j];
      a[j] = change;
    }

  }
  change = a[i + 1];
  a[i + 1] = a[n - 1];
  a[n - 1] = change;

  for(j = 0; j < n - 1; j++){
    if(j == i + 1) printf("[%d] ", a[j]);
    else printf("%d ", a[j]);
  }
  printf("%d\n", a[n - 1]);

  return 0;
}

Compiler output:
main.c:1:11: error: expected '=', ',', ';', 'asm' or '__attribute__' before '{' token
    1 | stdrsv1122{s1220049}76: #include <stdio.h>
      |           ^
main.c:1:21: error: expected identifier or '(' before numeric constant
    1 | stdrsv1122{s1220049}76: #include <stdio.h>
      |                     ^~
main.c:1:25: error: stray '#' in program
    1 | stdrsv1122{s1220049}76: #include <stdio.h>
      |                         ^
Language: C

#include<stdio.h>
#define N 100000

int A[N],,n; 
int partition( int int );

int partition( int p , int r ){
    
  int x,i,j,t;
  x = A[r];
  i = p - 1;
  for( j = p ; j < r ; j++){
    if( A[j] <= x ){
      i++;
      t = A[i];
      A[i] = A[j];
      A[j] = t;
    }
  }
  t = A[i + 1];
  A[i + 1] = A[r];
  A[r] = t;
  return i + 1;
  
}


main(){
  int q,i;

  scanf("%d",&n);

  for( i = 0 ; i < n ; i++ ){
    scanf("%d",A[i])
      }
  q = partition( 0 , n - 1 );
 
  for( i = 0 ; i < n ; i++ ){
    if( i ){
      printf(" ");
    }
    if( i == q ){
      printf("[");
    }
    printf("%d",A[i]);
    if( i == q ){
      printf("]");
    }
  }
  printf("\n");
 
  return 0;
}

Compiler output:
main.c:4:10: error: expected identifier or '(' before ',' token
    4 | int A[N],,n;
      |          ^
main.c:5:20: error: two or more data types in declaration specifiers
    5 | int partition( int int );
      |                    ^~~
main.c:7:5: error: conflicting types for 'partition'; have 'int(int,  int)'
    7 | int partition( int p , int r ){
      |     ^~~~~~~~~
main.c:5:5: note: previous declaration of 'partition' with type 'int(int)'
    5 | int partition( int int );
      |     ^~~~~~~~~
main.c:28:1: error: return type defaults to 'int' [-Wimplicit-int]
   28 | main(){
      | ^~~~
main.c: In function 'main':
main.c:31:15: error: 'n' undeclared (first use in this function)
   31 |   scanf("%d",&n);
      |               ^
main.c:31:15: note: each undeclared identifier is reported only once for each function it appears in
main.c:34:21: error: expected ';' before '}' token
   34 |     scanf("%d",A[i])
      |                     ^
      |                     ;
   35 |       }
      |       ~
Language: C

void printPartitionArray( int *a, int arrayLength, int shaft) {
 
  int i;
 
  for( i=0; i<arrayLength-1; i++) {
    if( i == shaft) {
      printf("[%d] ", a[i]);
    }else {
      printf("%d ", a[i]);
    }
  }
  if( i == shaft) {
      printf("[%d]\n", a[i]);
  }else {
    printf("%d\n", a[i]);
  }
 
}

Compiler output:
main.c: In function 'printPartitionArray':
main.c:7:7: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
    7 |       printf("[%d] ", a[i]);
      |       ^~~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'printf'
  +++ |+#include <stdio.h>
    1 | void printPartitionArray( int *a, int arrayLength, int shaft) {
main.c:7:7: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
    7 |       printf("[%d] ", a[i]);
      |       ^~~~~~
main.c:7:7: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:9:7: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
    9 |       printf("%d ", a[i]);
      |       ^~~~~~
main.c:9:7: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:13:7: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
   13 |       printf("[%d]\n", a[i]);
      |       ^~~~~~
main.c:13:7: 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]
   15 |     printf("%d\n", a[i]);
      |     ^~~~~~
main.c:15:5: note: include '<stdio.h>' or provide a declaration of 'printf'
Language: C

#include<stdio.h>
#include<stdlib.h>
#define N 100000

int A[N];
int Partition(int A[],int p,int r);
int main(){
  
  int i,j,n,x;
  
  scanf("%d",&n);
  /*
    A = malloc(sizeof(int)*n+1);
    B = malloc(sizeof(int)*n+1);
  */
  for(i=0;i<n;i++){
    scanf("%d",&A[i]);
  }
  
  x=Partition(A,0,n-1);
  for(i=0;i<n;i++){
    if(i==x)
      printf("[%d]",A[i]);    
    else if(i!=n-1){
      printf("%d ",A[i]);
    }
    else if(i==n-1){
      printf("%d",A[i]);
  }
  printf("\n");
  return 0;
}

int Partition(int A[],int p,int r){
  int x,i,j,n;
  x=A[r];
  i=p-1;
  for(j=p;j<=r-1;j++){
    if(x>=A[j]){
      i=i+1;
      n=A[j];
      A[j]=A[i];
      A[i]=n;
    }
  }
  n=A[r];
  A[r]=A[i+1];
  A[i+1]=n;
  return i+1;
}

Compiler output:
main.c: In function 'main':
main.c:50:1: error: expected declaration or statement at end of input
   50 | }
      | ^
Language: C

#include <stdio.h>
#define SWAP(a,b) {a^=b;b^=a;a^=b;}
int Partition(int *, int);

int main(){
  int i, j, n;

  // Input n
  scanf("%d", &n);

  // Create A[n]
  int A[n];

  // Input A[n]
  for(i = 0; i < n; i++) scanf("%d", &A[i]);

  // Partition A[n]
  j = Partition(A, n-1);

  // Output A[n]
  for(i = 0; i < n; i++){
    if(j == i) printf("[%d]", A[i]);
    else printf("%d", A[i]);
    if(i <-1 n) printf(" ");
  }
  printf("\n");

  return 0;
}

// Partition function
int Partition(int *A, int r){
  int x, i, j;
  // i is <, j is |

  // Set x, i
  x = A[r];
  i = -1;

  // Partition
  for(j = 0; j < r; j++){

    if(A[j] <= x){
      i++;
      SWAP(A[i], A[j]);
    }
  }
  SWAP(A[i + 1], A[r]);

  return i + 1;
}

Compiler output:
main.c: In function 'main':
main.c:24:13: error: expected ')' before 'n'
   24 |     if(i <-1 n) printf(" ");
      |       ~     ^~
      |             )
Language: C

#include<stdio.h>
main(){
  int i,p,q,n,x,taihi;
  int A[100001]
  scanf("%d",&n);
  for(i=0;i<n;i++)scanf("%d",&A[i]);
  x = A[n-1];
  p=-1;
  for(i=0;i<n;i++){
    if(A[i]<= x){
      p++;
      taihi =A[p];
      A[p]=A[i];
      A[i]=taihi;
    }
  }
  taihi= A[p+1];
  A[p+1]=A[n-1]
    A[n-1]=taihi;
  for(i=0;i<ni++){
    if(i==p+1)printf("[%d]",A[p+1]);
    printf("%d",A[i]);
    if(i<n-1)printf(" ");
  }
  printf("?\n");
  return 0;
}

Compiler output:
main.c:2:1: error: return type defaults to 'int' [-Wimplicit-int]
    2 | main(){
      | ^~~~
main.c: In function 'main':
main.c:5:3: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'scanf'
    5 |   scanf("%d",&n);
      |   ^~~~~
main.c:6:31: error: 'A' undeclared (first use in this function)
    6 |   for(i=0;i<n;i++)scanf("%d",&A[i]);
      |                               ^
main.c:6:31: note: each undeclared identifier is reported only once for each function it appears in
main.c:18:16: error: expected ';' before 'A'
   18 |   A[p+1]=A[n-1]
      |                ^
      |                ;
   19 |     A[n-1]=taihi;
      |     ~           
main.c:20:13: error: 'ni' undeclared (first use in this function); did you mean 'n'?
   20 |   for(i=0;i<ni++){
      |             ^~
      |             n
main.c:20:17: error: expected ';' before ')' token
   20 |   for(i=0;i<ni++){
      |                 ^
      |                 ;
Language: C

#include<stdio.h>
 
int A[2000000];
int i,p=1,r,j,x,n,t=0;
int part();
 
int main (void){
   
  scanf("%d",&r);
  for(i = 1;i <= r;i++){
    scanf("%d",&A[i]);
  }

  part();
 
  for(i = 1;i <= t;i++){
    printf("%d ",A[i]);
  }

  printf("[%d] ",A[i]);

  for(i = t+2;i <= r;i++){
    printf("%d",A[i]);
    if(i!=r)printf(" ");
  }

  printf("\n");
 
  return 0;
}
 
int partition(){
  x = A[r];
  i = p-1;

  if(i>r)return -1;

  for(j = p;j <= r-1;j++){
    if(A[j] <= x){
      i = i+1;
      n = A[i];
      A[i] = A[j];
      A[j] = n;
      t++;
    }
  }

Compiler output:
main.c: In function 'partition':
main.c:46:3: error: expected declaration or statement at end of input
   46 |   }
      |   ^
Language: C

#include <stdio.h>
#define N 100000
int Partition(int * ,int ,int );
int A[N];
 int Partition(int *A, int p,int r){
  int x,i,h,j;
 
  x = A[r];
  i = p - 1;
  for(j = p ; j <= r - 1; j++){
    if(A[j] <= x){
      i = i + 1;
    h = A[i];
    A[i] = A[j];
    A[j] = h;
    }
  }
  h = A[i + 1];
  A[i + 1] = A[r];
  A[r] = h;
 
  return i + 1;
}
main(){
 
  int i,n,z;
 
  scanf("%d",&n);
 n-1;
  for(i = 0 ; i <= n ; i++ ){
    scanf("%d",&A[i]);
  }
 
   z = Partition(A,0,n );
 
  for(i = 0 ; i < =n ; i++ ){
    if(i != 0) printf(" ");
    if(i == z) printf("[%d]",A[i]);
    else printf("%d",A[i]);
  }
 
  printf("\n");
 
  return 0;
   
}
 

Compiler output:
main.c:24:1: error: return type defaults to 'int' [-Wimplicit-int]
   24 | main(){
      | ^~~~
main.c: In function 'main':
main.c:36:19: error: expected expression before '=' token
   36 |   for(i = 0 ; i < =n ; i++ ){
      |                   ^
Language: C

#include <stdio.h>
#define N 100000
int Partition(int * ,int ,int );
int A[N];
 int Partition(int *A, int p,int r){
  int x,i,h,j;
 
  x = A[r];
  i = p - 1;
  for(j = p ; j <= r - 1; j++){
    if(A[j] <= x){
      i = i + 1;
    h = A[i];
    A[i] = A[j];
    A[j] = h;
    }
  }
  h = A[i + 1];
  A[i + 1] = A[r];
  A[r] = h;
 
  return i + 1;
}
main(){
 
  int i,n,z;
 
  scanf("%d",&n);
 n-1;
  for(i = 0 ; i <= n ; i++ ){
    scanf("%d",&A[i]);
  }
 
   z = Partition(A,0,n);
 
  for(i = 0 ; i < =n ; i++ ){
    if(i != 0) printf(" ");
    if(i == z) printf("[%d]",A[i]);
    else printf("%d",A[i]);
  }
 
  printf("\n");
 
  return 0;
   
}
 

Compiler output:
main.c:24:1: error: return type defaults to 'int' [-Wimplicit-int]
   24 | main(){
      | ^~~~
main.c: In function 'main':
main.c:36:19: error: expected expression before '=' token
   36 |   for(i = 0 ; i < =n ; i++ ){
      |                   ^
Language: C

#include <stdio.h>
#define N 100000
int Partition(int * ,int ,int );
int A[N];
 int Partition(int *A, int p,int r){
  int x,i,h,j;
 
  x = A[r];
  i = p - 1;
  for(j = p ; j <= r - 1; j++){
    if(A[j] <= x){
      i = i + 1;
    h = A[i];
    A[i] = A[j];
    A[j] = h;
    }
  }
  h = A[i + 1];
  A[i + 1] = A[r];
  A[r] = h;
 
  return i + 1;
}
main(){
 
  int i,n,z;
 
  scanf("%d",&n);
 n=n-1;
  for(i = 0 ; i <= n ; i++ ){
    scanf("%d",&A[i]);
  }
 
   z = Partition(A,0,n);
 
  for(i = 0 ; i < =n ; i++ ){
    if(i != 0) printf(" ");
    if(i == z) printf("[%d]",A[i]);
    else printf("%d",A[i]);
  }
 
  printf("\n");
 
  return 0;
   
}
 

Compiler output:
main.c:24:1: error: return type defaults to 'int' [-Wimplicit-int]
   24 | main(){
      | ^~~~
main.c: In function 'main':
main.c:36:19: error: expected expression before '=' token
   36 |   for(i = 0 ; i < =n ; i++ ){
      |                   ^
Language: C

#include<stdio.h>

int n,A[100000];

void partition(int,int);
main(){
  int i,a;
  scanf("%d",&n);
  for(i=0;i<n;i++) scanf("%d",&A[i]);
  a=partition(0,n-1);
  for(i=0;i<=n;i++){
    if(i == z)printf("[%d]",A[i]);
    else if(i != 0) printf("%d",A[i]);
    else pritnf(" ");
  }
  printf("\n");
  return 0;
}

void partition(int p,int r){
  int x,i,j,tmp;
  x = A[r];
  i = p-1;
  for(j=p;j<r;j++){
    if(A[j]<=x){
      i = i+1;
      tmp = A[x];
      A[x]=A[j];
      A[j]=temp;
    }
  }
  temp = A[i+1];
  A[i+1]=A[r];
  return i+1;
}

Compiler output:
main.c:6:1: error: return type defaults to 'int' [-Wimplicit-int]
    6 | main(){
      | ^~~~
main.c: In function 'main':
main.c:10:4: error: void value not ignored as it ought to be
   10 |   a=partition(0,n-1);
      |    ^
main.c:12:13: error: 'z' undeclared (first use in this function)
   12 |     if(i == z)printf("[%d]",A[i]);
      |             ^
main.c:12:13: note: each undeclared identifier is reported only once for each function it appears in
main.c:14:10: error: implicit declaration of function 'pritnf'; did you mean 'printf'? [-Wimplicit-function-declaration]
   14 |     else pritnf(" ");
      |          ^~~~~~
      |          printf
main.c: In function 'partition':
main.c:29:12: error: 'temp' undeclared (first use in this function); did you mean 'tmp'?
   29 |       A[j]=temp;
      |            ^~~~
      |            tmp
main.c:34:11: error: 'return' with a value, in function returning void [-Wreturn-mismatch]
   34 |   return i+1;
      |          ~^~
main.c:20:6: note: declared here
   20 | void partition(int p,int r){
      |      ^~~~~~~~~
Language: C

#include<stdio.h>

int n,A[100000];

void partition(int,int);
main(){
  int i,a;
  scanf("%d",&n);
  for(i=0;i<n;i++) scanf("%d",&A[i]);
  a=partition(0,n-1);
  for(i=0;i<=n;i++){
    if(i == a)printf("[%d]",A[i]);
    else if(i != 0) printf("%d",A[i]);
    else pritnf(" ");
  }
  printf("\n");
  return 0;
}

void partition(int p,int r){
  int x,i,j,tmp;
  x = A[r];
  i = p-1;
  for(j=p;j<r;j++){
    if(A[j]<=x){
      i = i+1;
      tmp = A[x];
      A[x]=A[j];
      A[j]=tmp;
    }
  }
  tmp = A[i+1];
  A[i+1]=A[r];
  A[r]=tmp;  
return i+1;
}

Compiler output:
main.c:6:1: error: return type defaults to 'int' [-Wimplicit-int]
    6 | main(){
      | ^~~~
main.c: In function 'main':
main.c:10:4: error: void value not ignored as it ought to be
   10 |   a=partition(0,n-1);
      |    ^
main.c:14:10: error: implicit declaration of function 'pritnf'; did you mean 'printf'? [-Wimplicit-function-declaration]
   14 |     else pritnf(" ");
      |          ^~~~~~
      |          printf
main.c: In function 'partition':
main.c:35:9: error: 'return' with a value, in function returning void [-Wreturn-mismatch]
   35 | return i+1;
      |        ~^~
main.c:20:6: note: declared here
   20 | void partition(int p,int r){
      |      ^~~~~~~~~
Language: C

#include<stdio.h>

int n,A[100000];

int partition(int,int);
main(){
  int i,a;
  scanf("%d",&n);
  for(i=0;i<n;i++) scanf("%d",&A[i]);
  a = partition(0,n-1);
  for(i=0;i<=n;i++){
    if(i == a)printf("[%d]",A[i]);
    if else printf(" ");
    else printf("%d",A[i]);
    
  }
  printf("\n");
  return 0;
}

int partition(int p,int r){
  int x,i,j,tmp;
  x = A[r];
  i = p-1;
  for(j=p;j<r;j++){
    if(A[j]<=x){
      i = i+1;
      tmp = A[x];
      A[x]=A[j];
      A[j]=tmp;
    }
  }
  tmp = A[i+1];
  A[i+1]=A[r];
  A[r]=tmp;  
return i+1;
}

Compiler output:
main.c:6:1: error: return type defaults to 'int' [-Wimplicit-int]
    6 | main(){
      | ^~~~
main.c: In function 'main':
main.c:13:8: error: expected '(' before 'else'
   13 |     if else printf(" ");
      |        ^~~~
      |        (
Language: C

#include<stdio.h>

int n,A[100000];

int partition(int,int);
main(){
  int i,a;
  scanf("%d",&n);
  for(i=0;i<n;i++) scanf("%d",&A[i]);
  a = partition(0,n-1);
  for(i=0;i<=n;i++){
    if(i == a)printf("[%d]",A[i]);
    if else(i !=0) printf(" ");
    else printf("%d",A[i]);
    
  }
  printf("\n");
  return 0;
}

int partition(int p,int r){
  int x,i,j,tmp;
  x = A[r];
  i = p-1;
  for(j=p;j<r;j++){
    if(A[j]<=x){
      i = i+1;
      tmp = A[x];
      A[x]=A[j];
      A[j]=tmp;
    }
  }
  tmp = A[i+1];
  A[i+1]=A[r];
  A[r]=tmp;  
return i+1;
}

Compiler output:
main.c:6:1: error: return type defaults to 'int' [-Wimplicit-int]
    6 | main(){
      | ^~~~
main.c: In function 'main':
main.c:13:8: error: expected '(' before 'else'
   13 |     if else(i !=0) printf(" ");
      |        ^~~~
      |        (
Language: C

#include<stdio.h>


int Partition(int *A,int p,int r){
  int i,x,j,tmp;
  x = A[r];
   
  i = p-1;
  for(j = p;j <= r-1;j++){
    if(A[j] <= x){
      i = i + 1;
      temp=A[i];
      A[i]=A[j];
      A[j]=tmp;
    }
  }
  tmp=A[i+1];
  A[i+1]=A[r];
  A[r]=tmp;
  return i+1;
}


int main(void){
  int n,i,A[100000],p;
  scanf("%d",&n);
  for(i=0;i<n;i++)
    scanf("%d",&A[i]);
  p=Partition(&A[0],0,n-1);
  printf("%d",A[0]);
  for(i=1;i<n;i++)
    if(i==p)
      printf(" [%d]",A[i]);
    else printf(" %d",A[i]);
  printf("\n");
  return 0;
}

Compiler output:
main.c: In function 'Partition':
main.c:12:7: error: 'temp' undeclared (first use in this function); did you mean 'tmp'?
   12 |       temp=A[i];
      |       ^~~~
      |       tmp
main.c:12:7: note: each undeclared identifier is reported only once for each function it appears in
Language: C

int partition(int *A, int p, int r){

  int tmp;
  x = A[r];
  i = p - 1;
  for( j = p; j < r; j++){
	if(A[j] <= x){
	  i = i + 1;
	  tmp = A[i];
	  A[i] = A[j];
	  A[j] = tmp;
	}
  }
  tmp = A[i+1];
  A[i+1] = A[r];
  A[r] = tmp;
  return i+1;
}

int main(){

  int p = 0;
  int n;

  scanf("%d", &n);

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

  x = partition(A, 0, n-1);

  for(i = 0; i < x; i++){
	printf("%d ", A[i]);
  }
  printf("[%d] ",A[x]);

  for(i = x+1; i < n-1; i++){
	printf("%d ", A[i]);
  }
  printf("%d\n", A[n-1]);

  return 0;
}

Compiler output:
main.c: In function 'partition':
main.c:4:3: error: 'x' undeclared (first use in this function)
    4 |   x = A[r];
      |   ^
main.c:4:3: note: each undeclared identifier is reported only once for each function it appears in
main.c:5:3: error: 'i' undeclared (first use in this function)
    5 |   i = p - 1;
      |   ^
main.c:6:8: error: 'j' undeclared (first use in this function)
    6 |   for( j = p; j < r; j++){
      |        ^
main.c: In function 'main':
main.c:25:3: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
   25 |   scanf("%d", &n);
      |   ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | int partition(int *A, int p, int r){
main.c:25:3: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
   25 |   scanf("%d", &n);
      |   ^~~~~
main.c:25:3: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:27:7: error: 'i' undeclared (first use in this function)
   27 |   for(i = 0; i < n; i++){
      |       ^
main.c:28:22: error: 'A' undeclared (first use in this function)
   28 |         scanf("%d", &A[i]);
      |                      ^
main.c:31:3: error: 'x' undeclared (first use in this function)
   31 |   x = partition(A, 0, n-1);
      |   ^
main.c:34:9: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
   34 |         printf("%d ", A[i]);
      |         ^~~~~~
main.c:34:9: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:34:9: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:34:9: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:36:3: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
   36 |   printf("[%d] ",A[x]);
      |   ^~~~~~
main.c:36:3: note: include '<stdio.h>' or provide a declaration of 'printf'
Language: C

int partition(int *A, int p, int r){
int x,j,tmp1,tmp2;
 x = A[r]; 
 i = p-1;
 for( j = p; j <= r-1 ; j++){
   if (A[j] <= x){
     i = i+1;
     tmp1 = A[i];
     A[i] = A[j];
     A[j] = tmp1;
     tmp2 = A[i+1];
     A[i+1] = A[r];
     A[r] = tmp2;
     return i+1;

   }
 }

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

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

   printf("\n");

   for (i = 0; i < n ; i++){
     printf("%d",partition(A,i,n));
   } 
   return 0;
 }

Compiler output:
main.c: In function 'partition':
main.c:4:2: error: 'i' undeclared (first use in this function)
    4 |  i = p-1;
      |  ^
main.c:4:2: note: each undeclared identifier is reported only once for each function it appears in
main.c: In function 'main':
main.c:21:4: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
   21 |    scanf("%d",&n);
      |    ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | int partition(int *A, int p, int r){
main.c:21:4: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
   21 |    scanf("%d",&n);
      |    ^~~~~
main.c:21:4: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:23:26: error: expected ')' before ';' token
   23 |    for( i = 0; i < n; i++;){
      |       ~                  ^
      |                          )
main.c:27:4: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
   27 |    printf("\n");
      |    ^~~~~~
main.c:27:4: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:27:4: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:27:4: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c: In function 'partition':
main.c:33:2: error: expected declaration or statement at end of input
   33 |  }
      |  ^
Language: C

#include <stdio.h>

int main(){

  int i,j,n,A[100000],temp,p,par;

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

  p = 0;
  i = p-1;

  for(j=p;j<n-1;j++){
    if(A[j] <= A[n-1]){
      i = i+1;
      temp = A[i];
      A[i] = A[j];
      A[j] = temp;
    }
  }
  temp = A[i+1];
  A[i+1] = A[n-1];
  A[n-1] = temp;

  par = i+1;

  for(i=0;i<n-1;i++){
    if(i == par){
      printf("[%d] ",A[i]);
    }else{
      printf("%d ",A[i]);
    }
  }

  if(n-1 == par){
      printf("[%d]\n",A[n-1]);
    }else{
      printf("%d\n",A[n-1]);

  return 0;
}
 

Compiler output:
main.c: In function 'main':
main.c:43:1: error: expected declaration or statement at end of input
   43 | }
      | ^
Language: C

#include <stdio.h>

int partition(int[] int int)

int main()
{


  int i,j,A[100000],n,m;

  scanf("%d",&n);

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

  m = partition(A,0,n-1);

  for(i=0;i<n;i++){

    if(i) printf(" ");

    if(i == m) printf("[");
    printf("%d",A[i]);
    if(i == m) printf("]");
  }
  printf("\n");
 


  return 0;
}
 
 int partition(int A[] ,int p,int r)
  {
    int tmp;
  x = A[r];
  i = p-1;

  for(j=p;j<r;j++){
    if(A[j] <= x){
      i = i+1;
      tmp = A[i];
      A[i] = A[j];
      A[j] = tmp;
    }
  }
    tmp = A[i+1];
    A[i+1] = A[r];
    A[r] = tmp;


  return i+1;
  }

Compiler output:
main.c:3:21: error: expected ';', ',' or ')' before 'int'
    3 | int partition(int[] int int)
      |                     ^~~
main.c: In function 'partition':
main.c:35:3: error: 'x' undeclared (first use in this function)
   35 |   x = A[r];
      |   ^
main.c:35:3: note: each undeclared identifier is reported only once for each function it appears in
main.c:36:3: error: 'i' undeclared (first use in this function)
   36 |   i = p-1;
      |   ^
main.c:38:7: error: 'j' undeclared (first use in this function)
   38 |   for(j=p;j<r;j++){
      |       ^
Language: C

#include <stdio.h>
#include <stdlib.h>
#define MAX 100000



int partition(int *A, int p, int r){
  int x,j,tmp1,tmp2,i;
 x = A[r]; 
 i = p-1;
 for( j = p; j < r ; j++){
   if (A[j] <= x){
     i = i+1;
     tmp1 = A[i];
     A[i] = A[j];
     A[j] = tmp1;
   }
 }
   tmp2 = A[i+1];
   A[i+1] = A[r];
   A[r] = tmp2;
   return i+1;

 }

   
 int main(){
   int i,n,*A;

   A = (int*)malloc(sizeof(int)*MAX);

   scanf("%d",&n);

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

  
   partition(A,0,n-1);
   // for (i = 0; i < n ; i++){
     //   } 

     for(i = 0;i < n;i++){
       if(i = 
       printf("%d ",A[i]);
     }
     printf("\n");
     free(A);
   return 0;
 }
       

Compiler output:
main.c: In function 'main':
main.c:45:26: error: expected ')' before ';' token
   45 |        printf("%d ",A[i]);
      |                          ^
      |                          )
main.c:44:10: note: to match this '('
   44 |        if(i =
      |          ^
main.c:46:6: error: expected expression before '}' token
   46 |      }
      |      ^
Language: C

#include<stdio.h>

#define N 100001

int Partition(int A[],int p,int r);

int main(){
  int A[N];
  int n,i,q;
  
  scanf("%d",&n);
  
  for(i = 0 ; i < n ; i++) scanf("%d",&A[i]);
  
  q = Patition(A,0,n-1);
  
  for(i=0;i<n;i++){
    if(i == q){
      printf("[%d] ",A[i]);
    } else if(i != n-1) {
      printf("%d ",A[i]);
    }
    else printf("%d",A[i]);
  }
  printf("\n");
  
  return 0;
}

int Partition(int A[],int p,int r){
  int i,j,x,y,z;
  
  x = A[r]; 
  i = p - 1;

  for(j = p ; j < r ; j++){
    if(A[j] <= x){
      i += 1;
      y = A[i];
      A[i] = A[j];
      A[j] = y;
    }
  }
  
  z = A[i+1];
  A[i+1] = A[r];
  A[r] = z;
  
  return i+1;
}

Compiler output:
main.c: In function 'main':
main.c:15:7: error: implicit declaration of function 'Patition'; did you mean 'Partition'? [-Wimplicit-function-declaration]
   15 |   q = Patition(A,0,n-1);
      |       ^~~~~~~~
      |       Partition
Language: C

#include<stdio.h>
#define n 100001
void swap(int ,int);

int A[n],key;
int partition(int ,int);
void swap(int x, int y)
{
  int temp;
  temp = x;
  x = y;
  y = temp;
}


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

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

  key = partition(0,num-1);

  printf("%d",A[0]);

  for(i = 1 ; i < num ; i++)
    {
      if(key == i)printf(" [%d]",A[i]);
      else printf(" %d",A[i]);
    }

  printf("\n");


  return 0;
}

Compiler output:
/usr/bin/ld: /tmp/cciD45HU.o: in function `main':
main.c:(.text+0x93): undefined reference to `partition'
collect2: error: ld returned 1 exit status
Language: C

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

#define N 10000

int n;

void Partiton(unsigned short* ,int ,int);

int main(){

  unsigned short *A, *B;

  int k=0;
  int i;

  scanf("%d",&n);

  A = malloc(sizeof(short)*n+1);

  for(i=0;i<n;i++)
    scanf("%hu",&A[i+1]);

  Partition(A,1,n);

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

  printf("\n");

  return 0;

}

void Partition(unsigned short *A, int p, int r){

  int x,i,tmp;
  
  x = A[r];
  i = p-1;

  for(j = p;j<=r-1;j++){
    if(A[j] <= x){
      i = i+1;
      tmp = A[i];
      A[i] = A[j];
      A[j] = tmp;
    }

    tmp = A[i+1];
    A[i+1] =  A[r];
    A[r] = tmp;

    return i+1;

}

Compiler output:
main.c: In function 'main':
main.c:24:3: error: implicit declaration of function 'Partition'; did you mean 'Partiton'? [-Wimplicit-function-declaration]
   24 |   Partition(A,1,n);
      |   ^~~~~~~~~
      |   Partiton
main.c: At top level:
main.c:37:6: warning: conflicting types for 'Partition'; have 'void(short unsigned int *, int,  int)'
   37 | void Partition(unsigned short *A, int p, int r){
      |      ^~~~~~~~~
main.c:24:3: note: previous implicit declaration of 'Partition' with type 'void(short unsigned int *, int,  int)'
   24 |   Partition(A,1,n);
      |   ^~~~~~~~~
main.c: In function 'Partition':
main.c:44:7: error: 'j' undeclared (first use in this function)
   44 |   for(j = p;j<=r-1;j++){
      |       ^
main.c:44:7: note: each undeclared identifier is reported only once for each function it appears in
main.c:56:13: error: 'return' with a value, in function returning void [-Wreturn-mismatch]
   56 |     return i+1;
      |            ~^~
main.c:37:6: note: declared here
   37 | void Partition(unsigned short *A, int p, int r){
      |      ^~~~~~~~~
main.c:58:1: error: expected declaration or statement at end of input
   58 | }
      | ^
Language: C

include<stdio.h>
#define N 10000
int partition(int*, int ,int);
int A[N];
int main(){

  int i,num,mid;

  scanf("%d",&num);
  for(i=0;i<num;i++){

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


   mid = partition(A,0,num-1);
  for(i=0;i<num-1;i++){

    if(i==mid){
      printf("[ %d ]",A[i]);
    }
      else  printf("%d ",A[i]);
int partition(int *A, int p, int r){

  int x,tmp,tmp2,j,i;

  x=A[r];
  i=p-1;

  for(j=p; j<=r-1;j++){


    if(A[j]<=x){

      i=i+1;
      tmp=A[i];
      A[i]=A[j];
      A[j]=tmp;
    }
  }
    tmp2 = A[i+1];
    A[i+1]=A[r];
    A[r]=tmp2;


  return i+1;
}


  }
  printf("%d\n",A[i]);
  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:9:3: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
    9 |   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:9:3: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
    9 |   scanf("%d",&num);
      |   ^~~~~
main.c:9:3: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:16:10: error: implicit declaration of function 'partition' [-Wimplicit-function-declaration]
   16 |    mid = partition(A,0,num-1);
      |          ^~~~~~~~~
main.c:20:7: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
   20 |       printf("[ %d ]",A[i]);
      |       ^~~~~~
main.c:20:7: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:20:7: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:20:7: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:22:13: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
   22 |       else  printf("%d ",A[i]);
      |             ^~~~~~
main.c:22:13: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:51:3: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
   51 |   printf("%d\n",A[i]);
      |   ^~~~~~
main.c:51:3: note: include '<stdio.h>' or provide a declaration of 'printf'
Language: C

#include<stdio.h>
#define MAX 100000

int partition(int A[], int num, int o, int m){
  int x, i, j, t;
  x = A[m];
  i = o - 1;
  for ( j = o; j < m; j++ ){
    if ( A[j] <= x ){
      i++;
      t = A[i]; A[i] = A[j]; A[j] = t;
    }
  }
  t = A[i+1]; A[i+1] = A[r]; A[r] = t;
  return i+1;
}

int main(){
  int A[MAX], num, i, r;
  scanf("%d", &n);
  for ( i = 0; i < num; i++ ) scanf("%d", &A[i]);
  r = partition(A, n, 0, n-1);

  for ( i = 0; i < num; i++ ) {
    if ( i ) printf(" ");
    if ( i == r ) printf("[");
    printf("%d", A[i]);
    if ( i == r ) printf("]");
  }
  printf("\n");

  return 0;
}

Compiler output:
main.c: In function 'partition':
main.c:14:26: error: 'r' undeclared (first use in this function)
   14 |   t = A[i+1]; A[i+1] = A[r]; A[r] = t;
      |                          ^
main.c:14:26: note: each undeclared identifier is reported only once for each function it appears in
main.c: In function 'main':
main.c:20:16: error: 'n' undeclared (first use in this function)
   20 |   scanf("%d", &n);
      |                ^
Language: C

#include<stdio.h>
#include<stdlib.h>
#define N 100000
????
int A[N];
int Partition(int A[],int p,int r);
int main(){
????????
????int i,j,n,x;
????????
????scanf("%d",&n);
????/*
????????A = malloc(sizeof(int)*n+1);
????????B = malloc(sizeof(int)*n+1);
????*/
????for(i=0;i<n;i++){
????????scanf("%d",&A[i]);
????}
????????
????x=Partition(A,0,n-1);
????for(i=0;i<x;i++){
????????printf("%d ",A[i]);???? 
????}
????printf("[%d] ",A[x]);
????for(i=x+1;i<n;i++){
????????printf("%d",A[i]);
????????if(i!=n-1)
????????????printf(" ");?????? 
????}
????printf("\n");
????return 0;
}
????
int Partition(int A[],int p,int r){
????int x,i,j,n;
????x=A[r];
????i=p-1;
????for(j=p;j<=r-1;j++){
????????if(x>=A[j]){
????????????i=i+1;
????????????n=A[j];
????????????A[j]=A[i];
????????????A[i]=n;
????????}
????}
????n=A[r];
????A[r]=A[i+1];
????A[i+1]=n;
????return i+1;
}

Compiler output:
main.c:4:1: error: expected identifier or '(' before '?' token
    4 | ????
      | ^
main.c: In function 'main':
main.c:8:1: error: expected expression before '?' token
    8 | ????????
      | ^
main.c:10:1: error: expected expression before '?' token
   10 | ????????
      | ^
main.c:11:17: error: 'n' undeclared (first use in this function)
   11 | ????scanf("%d",&n);
      |                 ^
main.c:11:17: note: each undeclared identifier is reported only once for each function it appears in
main.c:12:1: error: expected expression before '?' token
   12 | ????/*
      | ^
main.c:12:3: warning: trigraph ??/ ignored, use -trigraphs to enable [-Wtrigraphs]
   12 | ????/*
main.c:21:1: error: expected expression before '?' token
   21 | ????for(i=0;i<x;i++){
      | ^
main.c:25:1: error: expected expression before '?' token
   25 | ????for(i=x+1;i<n;i++){
      | ^
main.c:31:1: error: expected expression before '?' token
   31 | ????return 0;
      | ^
main.c: At top level:
main.c:33:1: error: expected identifier or '(' before '?' token
   33 | ????
      | ^
Language: C

#include <stdio.h>
#define MAX 100000
 
int A[MAX];
int partition();
 
 
int main(){

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

  for( i=0 ; i < n ; i++ ){

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

  }

  q = partition( 0 , n-1 );
 
  for( i = 0; i < n; i++ ){

    if(i == q) printf("[");
 
      printf( "%d", A[i]);
 
      if(i == q) printf("]");
 
      if(i != n-1) printf(" ");
  }
  printf("\n");
 
  return 0;
}
 
int partition(int p,int r)
{
  int i,j;
  int x;
  int s;
 
  x = A[r];
  i = p-1;

  for(j = p; j < r; j++){

    if(a[j]<= x){

      i++;
      s = A[i];
      A[i] = A[j];
      A[j] = s;
    }
  }
      s = A[i+1];
      A[i+1] = A[r];
      A[r] = s;
  
    return i+1;
  }

Compiler output:
main.c: In function 'partition':
main.c:49:8: error: 'a' undeclared (first use in this function)
   49 |     if(a[j]<= x){
      |        ^
main.c:49:8: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include<stdio.h>
int A[100000]
int pariton(int*,int,int);
int main(){
  int n,r,x;
  int i,j;
  scanf("%d",&n);  
  for(i=0;i<n;i++) scanf("%d",&A[i]);
  x = A[n-1];
  r=partition(A,0,n-1);
  printf("%d",A[0]);
  for(i=1;i<n;i++){
    if(i == r) printf(" [%d]",A[i]);
    else printf(" %d",A[i]);
  }
  printf("\n");
  return 0;
}
 
int partition(int *A,int p,int r){
  int x,n;
  int i,j;
  int tmp1,tmp2;
  n=r;
  x = A[r];
  i = p-1;
  for(j=p;j<r;j++){
    if(A[j]<=x){
      i=i+1;
      tmp1=A[i];
      A[i]=A[j];
      A[j]=tmp1;
    }
  }
  tmp2=A[i+1];
  A[i+1]=A[r];
  A[r]=tmp2;
  return i+1;
}

Compiler output:
main.c:2:14: error: expected ';' before 'int'
    2 | int A[100000]
      |              ^
      |              ;
    3 | int pariton(int*,int,int);
      | ~~~           
main.c: In function 'main':
main.c:8:32: error: 'A' undeclared (first use in this function)
    8 |   for(i=0;i<n;i++) scanf("%d",&A[i]);
      |                                ^
main.c:8:32: note: each undeclared identifier is reported only once for each function it appears in
main.c:10:5: error: implicit declaration of function 'partition'; did you mean 'pariton'? [-Wimplicit-function-declaration]
   10 |   r=partition(A,0,n-1);
      |     ^~~~~~~~~
      |     pariton
Language: C

#include <stdio.h>
#define Max 100000
 
int partition(int,int,int);
 
int main(){
  int a[Max];
  int n,q;
  int i;
 
  scanf("%d",&n);
  for(i = 0; i < n; i++){
    scanf("%d",&a[i]);
  }
  q = partition(A,0,n-1);
 
  for(i = 0; i < n; i++){
    if(i == q) printf("[");
 
      printf("%d",a[i]);
 
      if(i == q) printf("]");
 
      if(i != n-1) printf(" ");
  }
  printf("\n");
 
  return 0;
}
 
int partition(int A[],int p,int r){
  int x;
  int i,j;
  int s;
 
  x = a[r];
  i = p-1;
  for(j = p; j < r; j++){
    if(a[j] <= x){
      i++;
      s = a[i];
      a[i] = a[j];
      a[j] = s;
    }
  }
      s = a[i+1];
      a[i+1] = a[r];
      a[r] = s;
  
    return i+1;
  }

Compiler output:
main.c: In function 'main':
main.c:15:17: error: 'A' undeclared (first use in this function)
   15 |   q = partition(A,0,n-1);
      |                 ^
main.c:15:17: note: each undeclared identifier is reported only once for each function it appears in
main.c: At top level:
main.c:31:5: error: conflicting types for 'partition'; have 'int(int *, int,  int)'
   31 | int partition(int A[],int p,int r){
      |     ^~~~~~~~~
main.c:4:5: note: previous declaration of 'partition' with type 'int(int,  int,  int)'
    4 | int partition(int,int,int);
      |     ^~~~~~~~~
main.c: In function 'partition':
main.c:36:7: error: 'a' undeclared (first use in this function)
   36 |   x = a[r];
      |       ^
Language: C

#include <stdio.h>
#define Max 100000
 
int partition(int A[],int,int);
 
int main(){
  int a[Max];
  int n,q;
  int i;
 
  scanf("%d",&n);
  for(i = 0; i < n; i++){
    scanf("%d",&a[i]);
  }
  q = partition(A,0,n-1);
 
  for(i = 0; i < n; i++){
    if(i == q) printf("[");
 
      printf("%d",a[i]);
 
      if(i == q) printf("]");
 
      if(i != n-1) printf(" ");
  }
  printf("\n");
 
  return 0;
}
 
int partition(int A[],int p,int r){
  int x;
  int i,j;
  int s;
 
  x = a[r];
  i = p-1;
  for(j = p; j < r; j++){
    if(a[j] <= x){
      i++;
      s = a[i];
      a[i] = a[j];
      a[j] = s;
    }
  }
      s = a[i+1];
      a[i+1] = a[r];
      a[r] = s;
  
    return i+1;
  }

Compiler output:
main.c: In function 'main':
main.c:15:17: error: 'A' undeclared (first use in this function)
   15 |   q = partition(A,0,n-1);
      |                 ^
main.c:15:17: note: each undeclared identifier is reported only once for each function it appears in
main.c: In function 'partition':
main.c:36:7: error: 'a' undeclared (first use in this function)
   36 |   x = a[r];
      |       ^
Language: C

#include <stdio.h>
#define Max 100000
 
int partition(int A[],int p,int r);
 
int main(){
  int a[Max];
  int n,q;
  int i;
 
  scanf("%d",&n);
  for(i = 0; i < n; i++){
    scanf("%d",&a[i]);
  }
  q = partition(A,0,n-1);
 
  for(i = 0; i < n; i++){
    if(i == q) printf("[");
 
      printf("%d",a[i]);
 
      if(i == q) printf("]");
 
      if(i != n-1) printf(" ");
  }
  printf("\n");
 
  return 0;
}
 
int partition(int A[],int p,int r){
  int x;
  int i,j;
  int s;
 
  x = a[r];
  i = p-1;
  for(j = p; j < r; j++){
    if(a[j] <= x){
      i++;
      s = a[i];
      a[i] = a[j];
      a[j] = s;
    }
  }
      s = a[i+1];
      a[i+1] = a[r];
      a[r] = s;
  
    return i+1;
  }

Compiler output:
main.c: In function 'main':
main.c:15:17: error: 'A' undeclared (first use in this function)
   15 |   q = partition(A,0,n-1);
      |                 ^
main.c:15:17: note: each undeclared identifier is reported only once for each function it appears in
main.c: In function 'partition':
main.c:36:7: error: 'a' undeclared (first use in this function)
   36 |   x = a[r];
      |       ^