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

#include <stdio.h>
#define MAX 100000

int partition( int *A, int *Order, int p, int r );

int Quicksort( int *A, int *Order, int p, int r );

int isStable( int *in, int *out, int N );

int main(void)
{
    int Arr[MAX] = {};
    int Original[MAX] = {};
    int Order[MAX] = {};
    int Arr2[MAX] = {};
    char str[MAX][2] = {};
    int i = 0;
    int flag = 0;
    int order = 0;
     
    scanf("%d\n", &order);
     
    for ( i = 0; i < order; i++ ) {
        scanf("%s", str[i]);
        scanf("%d", &Arr[i]);
        Original[i] = Arr[i];
        Order[i] = i;
    }
    
    
    
    Quicksort(Arr, Order, 0, order-1);
    for ( i = 0; i < order, i++ ) {
        Arr2[i] = Arr[Order[i]];
    }
    
    flag = isStable( Original, Arr2, order );
    if ( flag < 0 ) {
        printf("Not stable\n");
    } else {
        printf("Stable\n");
    }
    
    for ( i = 0; i < order - 1 ; i++ ) {
        printf("%c %d\n", str[Order[i]][0], Arr[Order[i]]);
    }
    printf("%c %d\n", str[Order[i]][0], Arr[Order[i]]);
    return 0;
}
 
int partition( int *A, int *Order, int p, int r ) 
{
    int x = 0;
    int i = 0;
    int j = 0;
    int tmp = 0;
	static int kaisu = 0;
     
    x = A[Order[r]];
    i = p - 1;
    for ( j = p; j < r; j++ ) {
        if ( A[Order[j]] <= x ) {
            i = i+1;
            tmp = Order[i];
            Order[i] = Order[j];
            Order[j] = tmp;
        }
    }
     
    tmp = Order[r];
    Order[r] = Order[i+1];
    Order[i+1] = tmp;
   // printf("回数：%d p:%d r:%d\n", kaisu, p, r);
   /* for ( j = p; j < r + 1; j++ ) {
        printf("%d ", Order[j]);
    }
    kaisu++;
    printf("\n");*/
    return i+1;
}

int Quicksort( int *A, int *Order, int p, int r )
{
	int q = 0;
	static int kaisu = 0;
	if ( p < r ) {
		q = partition( A, Order, p, r );
		//printf("回数：%d partition：%d p:%d r:%d\n\n", kaisu, q, p, r);
		kaisu++;
		Quicksort(A, Order, p, q-1);
		Quicksort(A, Order, q+1, r);
	}
	return 0;
}



int isStable( int *in, int *out, int N )
{
    int i = 0;
    int j = 0;
    int a = 0;
    int b = 0;
    
    for ( i = 0; i < N; i++ ) {
        for ( j = i + 1; j < N; j++ ) {
            for ( a = 0; a < N - 1; a++ ) {
                for ( b = a + 1; b < N; b++ ) {
                    if ( in[i] == in [j] ) {
                        if ( in[i] == out[b] && in[j] == out[a] ) {
                            return -1;
                        }
                    }
                }
            }
        }
    }
    return 0;
}


Compiler output:
main.c: In function 'main':
main.c:33:32: error: expected ';' before ')' token
   33 |     for ( i = 0; i < order, i++ ) {
      |                                ^~
      |                                ;
Language: C

#include<stdio.h>
#define MAX 100001
#define INI 2000000000

 struct Card{
           char gara;
           int value;
           };

 int merge(struct Card card1[],int n,int left,int right,int mid){
          int i,n1,n2,j,k;
          struct Card L[MAX/2+2],R[MAX/2+2];
          n1=(mid-left);
          n2=(right-mid);
          for(i=0;i<n1;i++){L[i]=card1[left+i];}
          for(j=0;j<n2;j++){R[j]=card1[mid+j];}
          L[n1].value=INI;
          R[n2].value=INI;
          
          i=0;j=0;
          for(k=left;k<right;k++){
                      if(L[i].value<=R[j].value){card1[k]=L[i];i++;}
                      else {card1[k]=R[j];j++;}
                      }
          }
          

 int mergesort(struct Card card1[],int n,int left,int right){
          int mid;
          if(right-left>1){
                    mid=(left+right)/2;
                    mergesort(card1,n,left,mid);
                    mergesort(card1,n,mid,right);
                    merge(card1,n,left,right,mid);
                    }
           }

 int part(struct Card card1[],int n,int left,int right){
      struct Card tmp,key;
      key=card2[right];
      int i,j;
      
      i=left-1;
      for(j=left;j<right;j++){
               if(card2[j].value<=key.value){
                                i++;
                                tmp=card2[i];card2[i]=card2[j];card2[j]=tmp;
                                }
               }
       i++;
       tmp=card2[i];card2[i]=card2[right];card2[right]=tmp;
       return i;
       }
   

 int quick(struct Card card2[],int n,int left,int right){
      int q;
      if(left<right){
          q=part(card2,n,left,right);
          quick(card2,n,left,q-1);
          quick(card2,n,q+1,right);
          }
       }

 int main(){
        int n,v,flag=1,i;
        struct Card card1[MAX];
        struct Card card2[MAX];
        char c[10];
        scanf("%d",&n);
        for(i=0;i<n;i++){
                  scanf("%s%d",c,v);
                  card2[i].gara=card1[i].gara=c[0];
                  card2[i].value=card1[i].value=v;
                  }

        mergesort(card1,n,0,n);
        quick(card2,n,0,n-1);

        for(i=0;i<n;i++){
                  if(card1[i].gara!=card2[i].gara)flag=0;
                  }
        if(flag==1){printf("Stable\n");
        else {printf("Not stable\n");

        for(i=0;i<n;i++){printf("%c %d\n",card2[i].gara,card2[i].value);}
        return 0;
        }






Compiler output:
main.c: In function 'part':
main.c:40:11: error: 'card2' undeclared (first use in this function); did you mean 'card1'?
   40 |       key=card2[right];
      |           ^~~~~
      |           card1
main.c:40:11: note: each undeclared identifier is reported only once for each function it appears in
main.c: In function 'main':
main.c:84:9: error: expected '}' before 'else'
   84 |         else {printf("Not stable\n");
      |         ^~~~
main.c:88:9: error: expected declaration or statement at end of input
   88 |         }
      |         ^
Language: C

#include<stdio.h>
#define MAX 100001
#define INI 2000000000

 struct Card{
           char gara;
           int value;
           };

 int merge(struct Card card1[],int n,int left,int right,int mid){
          int i,n1,n2,j,k;
          struct Card L[MAX/2+2],R[MAX/2+2];
          n1=(mid-left);
          n2=(right-mid);
          for(i=0;i<n1;i++){L[i]=card1[left+i];}
          for(j=0;j<n2;j++){R[j]=card1[mid+j];}
          L[n1].value=INI;
          R[n2].value=INI;
          
          i=0;j=0;
          for(k=left;k<right;k++){
                      if(L[i].value<=R[j].value){card1[k]=L[i];i++;}
                      else {card1[k]=R[j];j++;}
                      }
          }
          

 int mergesort(struct Card card1[],int n,int left,int right){
          int mid;
          if(right-left>1){
                    mid=(left+right)/2;
                    mergesort(card1,n,left,mid);
                    mergesort(card1,n,mid,right);
                    merge(card1,n,left,right,mid);
                    }
           }

 int part(struct Card card2[],int n,int left,int right){
      struct Card tmp,key;
      key=card2[right];
      int i,j;
      
      i=left-1;
      for(j=left;j<right;j++){
               if(card2[j].value<=key.value){
                                i++;
                                tmp=card2[i];card2[i]=card2[j];card2[j]=tmp;
                                }
               }
       i++;
       tmp=card2[i];card2[i]=card2[right];card2[right]=tmp;
       return i;
       }
   

 int quick(struct Card card2[],int n,int left,int right){
      int q;
      if(left<right){
          q=part(card2,n,left,right);
          quick(card2,n,left,q-1);
          quick(card2,n,q+1,right);
          }
       }

 int main(){
        int n,v,flag=1,i;
        struct Card card1[MAX];
        struct Card card2[MAX];
        char c[10];
        scanf("%d",&n);
        for(i=0;i<n;i++){
                  scanf("%s%d",c,v);
                  card2[i].gara=card1[i].gara=c[0];
                  card2[i].value=card1[i].value=v;
                  }

        mergesort(card1,n,0,n);
        quick(card2,n,0,n-1);

        for(i=0;i<n;i++){
                  if(card1[i].gara!=card2[i].gara)flag=0;
                  }
        if(flag==1){printf("Stable\n");
        else {printf("Not stable\n");

        for(i=0;i<n;i++){printf("%c %d\n",card2[i].gara,card2[i].value);}
        return 0;
        }






Compiler output:
main.c: In function 'main':
main.c:84:9: error: expected '}' before 'else'
   84 |         else {printf("Not stable\n");
      |         ^~~~
main.c:88:9: error: expected declaration or statement at end of input
   88 |         }
      |         ^
Language: C

# include <stdio.h>

typedef struct {
  int value;
  char mark;
}card;

int part ( card [],int ,int);
void quickSort( card [],int ,int);
int main(){
  int n,i ,t;char tc;
  scanf("%d\n" , &n);
  card arr[n] ,input[n];
  for ( i = 0; i < n; i++){
    if ( i == n-1 ) { scanf("%c %d",&arr[i].mark,&arr[i].value);
  
    }else{
      scanf("%c %d ",&arr[i].mark,&arr[i].value);
    }
    input[i].mark = arr[i].mark;
    input[i].value = arr[i].value;
    
  }

  margeSort(arr,0,n);

  quickSort(input, 0,n-1);


   flag = 1;
  for ( i = 0; i < n; i++){
    if( input[i].mark != arr[i].mark){
      flag =0;break;
    }
  }
  if (flag == 1){printf("Stable\n");}
  else if ( flag == 0)  { printf("Not stable\n");}
  
    for ( i = 0; i < n; i++){
      printf("%c %d\n",input[i].mark,input[i].value);
    }
  
  return 0;
}


void quickSort( card a[],int p,int r){
  if ( p < r){
    int q = part(a , p ,r);
    quickSort(a,p,q-1);
    quickSort(a,p+1,r);
  }
}

int  part (card a[] ,int p ,int r){
  int x = a[r].value ,t ,k;char tc;
  int j, i = p-1;
  for ( j = p ; j < r ; j++ ){
    if ( a[j].value  <= x){
      i++;
      t = a[i].value; a[i].value = a[j].value; a[j].value =t;
      tc = a[i].mark; a[i].mark = a[j].mark; a[j].mark =tc;
    }
  }
  t = a[i+1].value; a[i+1].value = a[r].value ; a[r].value=t;
  tc = a[i+1].mark; a[i+1].mark = a[r].mark ; a[r].mark=tc;
  return i+1;
}


void merge (   long   int a[] ,   unsigned int lef ,   unsigned int mid ,  unsigned int rig){
  unsigned int k,none = mid - lef,i,j,ntwo = rig - mid;

  for (i = 0; i <  none;i++ ){
    l[i] = a[lef+ i];
  }
  for ( i = 0; i < ntwo ; i++){
    r[i] = a[mid + i];
  }l[none] = 2500000000;r[ntwo]= 2500000000; i= 0;j= 0;
  for (k = lef ;k < rig ;k++ ){
    c++;
    if (l[i] <= r[j]){
      a[k] = l[i];
      i = i + 1;
    }else{ 
      a[k] = r[j];
      j = j + 1;
    }
  }
}



Compiler output:
main.c: In function 'main':
main.c:25:3: error: implicit declaration of function 'margeSort' [-Wimplicit-function-declaration]
   25 |   margeSort(arr,0,n);
      |   ^~~~~~~~~
main.c:30:4: error: 'flag' undeclared (first use in this function)
   30 |    flag = 1;
      |    ^~~~
main.c:30:4: note: each undeclared identifier is reported only once for each function it appears in
main.c: In function 'merge':
main.c:75:5: error: 'l' undeclared (first use in this function)
   75 |     l[i] = a[lef+ i];
      |     ^
main.c:78:5: error: 'r' undeclared (first use in this function)
   78 |     r[i] = a[mid + i];
      |     ^
main.c:81:5: error: 'c' undeclared (first use in this function)
   81 |     c++;
      |     ^
Language: C

#include<stdio.h>

#define MAX 100000

typedef struct{
  char mark;
  int number;
}card;

int partition(card *,int,int);
void quicksort(card *,int,int);
int Stable(card *,card *,int);

int main()
{
  int n,i;
  card A[MAX],in[MAX];

  scanf("%d",&n);

  for(i = 0 ; i < n ; i++)
    {
      scanf(" %c %d",&A[i].mark,&A[i].number);
      in[i] = A[i];
    }
  
  quicksort(A,0,n-1);
  
  if(Stable(in,A,n)) printf("Stable\n");
  else printf("Not stable\n");

  for(i = 0 ; i < n ; i++)
    {    
      printf("%c %d\n",A[i].mark,A[i].number);
    }
  
  return 0;
}

int partition(card *A,int p,int r)
{
  int x,i,j;
  card change;

  x = A[r].number;

  i = p-1;

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

  return i+1;
}

void quicksort(card *A,int p,int r)
{
  int q;
  if(p < r)
    {
      q = partition(A,p,r);
      quicksort(A,p,q-1);
      quicksort(A,q+1,r);
    }
  return;
}

int Stable(card *in,card *out,int n)
{
  int i,j,a,b;

  for(i = 0 ; i < n-1 ; i++)
    {
      for(a = 0 ; a < n ; a++)
	{
	  if(out[i].number == out[i+1].number)
	    {　
		/* outの隣同士の数字が同じなら、inとoutの数字の一致する場所を探す */
		
	      if(in[a].number == out[i].number)
		{
		  　/* 数字が一致する場所を見つけたら、絵が同じか調べる */
		    
		  if(in[a].mark == out[i].mark)
		    {
		      /* 絵も一致するなら今の所安定 */
		      
		       /* このペアはもう使わないので判断の邪魔にならない数字を代入 */
		      in[a].number = -1;
		      
		      break; /* inのループを脱出、次のoutの探索へ */
		    }
		  else return 0; /* 数字が一致するが絵が違うなら不安定 */
		}
	    }
	}
    
    }
  return 1;
}



Compiler output:
main.c: In function 'Stable':
main.c:87:14: error: stray '\343' in program
   87 |             {<U+3000>
      |              ^~~~~~~~
main.c:92:19: error: stray '\343' in program
   92 |                   <U+3000>/* <U+6570><U+5B57><U+304C><U+4E00><U+81F4><U+3059><U+308B><U+5834><U+6240><U+3092><U+898B><U+3064><U+3051><U+305F><U+3089><U+3001><U+7D75><U+304C><U+540C><U+3058><U+304B><U+8ABF><U+3079><U+308B> */
      |                   ^~~~~~~~
Language: C

#include <stdio.h>
#define MAX 100000
#define SEN 2000000000

typedef struct Card{
  char suit;
  int value;
}C;

C L[MAX/2+2],R[MAX/2+2];

void merge(C A[],int n,int left,int mid,int right){
  int i,j,k;
  int n1=mid-left;
  int n2=right-mid;
  for(i=0;i<n1;i++)L[i]=A[left+i];
  for(i=0;i<n2;i++)R[i]=A[mid+i];
  L[n1].value=R[n2].value=SEN;
  i=j=0;
  for(k=left;k<right;k++){
    if(L[i].value<=R[j].value){
      A[k]=L[i++];
    }
    else {
      A[k]=L[i++];
    }
  }
}

void mergeSort(C A[],int n,int left,int right){
  int mid;
  if(left+1<right){
    mid=(left+right)/2;
    mergeSort(A,n,left,mid);
    mergeSort(A,n,mid,right);
    merge(A,n,lefrt,mid,right);
  }
}

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

void quickSort(C A[],int n.int p,int r){
  int q;
  if(p<r){
    q=partition(A,n,p,r);
    quickSort(A,n,p,q-1);
    quickSort(A,n,q+1,r);
  }
}

int main(){
  int n,i,v;
  C A[MAX],B[MAX];
  char[10];
  int stable=1;

  scanf("%d",&n);

  for(i=0;i<n;i++){
    scanf("%s %d",S,&v);
    A[i].suit=B[i].suit=S[0];
    A[i].value=B[i].value=v;
  }

  mergeSort(A,n,0,n);
  quickSort(B,n,0,n-1);

  for(i=0;i<n;i++){
    if(A[i].suit!=B[i].suit) stable=0;
  }

  if(stable==1) printf("Stable\n");
  else printf("Not stable\n");
  for(i=0;i<n;i++){
    printf("%c %d\n",B[i].suit,B[i].value);
  }
  return 0;
}


Compiler output:
main.c: In function 'mergeSort':
main.c:36:15: error: 'lefrt' undeclared (first use in this function); did you mean 'left'?
   36 |     merge(A,n,lefrt,mid,right);
      |               ^~~~~
      |               left
main.c:36:15: note: each undeclared identifier is reported only once for each function it appears in
main.c: At top level:
main.c:40:21: error: unknown type name 'inr'; did you mean 'int'?
   40 | int partition(C A[],inr n,int p,int r){
      |                     ^~~
      |                     int
main.c:59:27: error: expected ';', ',' or ')' before '.' token
   59 | void quickSort(C A[],int n.int p,int r){
      |                           ^
main.c: In function 'main':
main.c:71:7: error: expected identifier or '(' before '[' token
   71 |   char[10];
      |       ^
main.c:77:19: error: 'S' undeclared (first use in this function)
   77 |     scanf("%s %d",S,&v);
      |                   ^
main.c:83:3: error: implicit declaration of function 'quickSort' [-Wimplicit-function-declaration]
   83 |   quickSort(B,n,0,n-1);
      |   ^~~~~~~~~
Language: C

#include <stdio.h>
#define MAX 100000
#define SEN 2000000000

typedef struct Card{
  char suit;
  int value;
}C;

C L[MAX/2+2],R[MAX/2+2];

void merge(C A[],int n,int left,int mid,int right){
  int i,j,k;
  int n1=mid-left;
  int n2=right-mid;
  for(i=0;i<n1;i++)L[i]=A[left+i];
  for(i=0;i<n2;i++)R[i]=A[mid+i];
  L[n1].value=R[n2].value=SEN;
  i=j=0;
  for(k=left;k<right;k++){
    if(L[i].value<=R[j].value){
      A[k]=L[i++];
    }
    else {
      A[k]=L[i++];
    }
  }
}

void mergeSort(C A[],int n,int left,int right){
  int mid;
  if(left+1<right){
    mid=(left+right)/2;
    mergeSort(A,n,left,mid);
    mergeSort(A,n,mid,right);
    merge(A,n,left,mid,right);
  }
}

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

void quickSort(C A[],int n.int p,int r){
  int q;
  if(p<r){
    q=partition(A,n,p,r);
    quickSort(A,n,p,q-1);
    quickSort(A,n,q+1,r);
  }
}

int main(){
  int n,i,v;
  C A[MAX],B[MAX];
  char[10];
  int stable=1;

  scanf("%d",&n);

  for(i=0;i<n;i++){
    scanf("%s %d",S,&v);
    A[i].suit=B[i].suit=S[0];
    A[i].value=B[i].value=v;
  }

  mergeSort(A,n,0,n);
  quickSort(B,n,0,n-1);

  for(i=0;i<n;i++){
    if(A[i].suit!=B[i].suit) stable=0;
  }

  if(stable==1) printf("Stable\n");
  else printf("Not stable\n");
  for(i=0;i<n;i++){
    printf("%c %d\n",B[i].suit,B[i].value);
  }
  return 0;
}


Compiler output:
main.c:40:21: error: unknown type name 'inr'; did you mean 'int'?
   40 | int partition(C A[],inr n,int p,int r){
      |                     ^~~
      |                     int
main.c:59:27: error: expected ';', ',' or ')' before '.' token
   59 | void quickSort(C A[],int n.int p,int r){
      |                           ^
main.c: In function 'main':
main.c:71:7: error: expected identifier or '(' before '[' token
   71 |   char[10];
      |       ^
main.c:77:19: error: 'S' undeclared (first use in this function)
   77 |     scanf("%s %d",S,&v);
      |                   ^
main.c:77:19: note: each undeclared identifier is reported only once for each function it appears in
main.c:83:3: error: implicit declaration of function 'quickSort' [-Wimplicit-function-declaration]
   83 |   quickSort(B,n,0,n-1);
      |   ^~~~~~~~~
Language: C

#include <stdio.h>
#define MAX 100000
#define SEN 2000000000

typedef struct Card{
  char suit;
  int value;
}C;

C L[MAX/2+2],R[MAX/2+2];

void merge(C A[],int n,int left,int mid,int right){
  int i,j,k;
  int n1=mid-left;
  int n2=right-mid;
  for(i=0;i<n1;i++)L[i]=A[left+i];
  for(i=0;i<n2;i++)R[i]=A[mid+i];
  L[n1].value=R[n2].value=SEN;
  i=j=0;
  for(k=left;k<right;k++){
    if(L[i].value<=R[j].value){
      A[k]=L[i++];
    }
    else {
      A[k]=L[i++];
    }
  }
}

void mergeSort(C A[],int n,int left,int right){
  int mid;
  if(left+1<right){
    mid=(left+right)/2;
    mergeSort(A,n,left,mid);
    mergeSort(A,n,mid,right);
    merge(A,n,left,mid,right);
  }
}

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

void quickSort(C A[],int n.int p,int r){
  int q;
  if(p<r){
    q=partition(A,n,p,r);
    quickSort(A,n,p,q-1);
    quickSort(A,n,q+1,r);
  }
}

int main(){
  int n,i,v;
  C A[MAX],B[MAX];
  char[10];
  int stable=1;

  scanf("%d",&n);

  for(i=0;i<n;i++){
    scanf("%s %d",S,&v);
    A[i].suit=B[i].suit=S[0];
    A[i].value=B[i].value=v;
  }

  mergeSort(A,n,0,n);
  quickSort(B,n,0,n-1);

  for(i=0;i<n;i++){
    if(A[i].suit!=B[i].suit) stable=0;
  }

  if(stable==1) printf("Stable\n");
  else printf("Not stable\n");
  for(i=0;i<n;i++){
    printf("%c %d\n",B[i].suit,B[i].value);
  }
  return 0;
}


Compiler output:
main.c:59:27: error: expected ';', ',' or ')' before '.' token
   59 | void quickSort(C A[],int n.int p,int r){
      |                           ^
main.c: In function 'main':
main.c:71:7: error: expected identifier or '(' before '[' token
   71 |   char[10];
      |       ^
main.c:77:19: error: 'S' undeclared (first use in this function)
   77 |     scanf("%s %d",S,&v);
      |                   ^
main.c:77:19: note: each undeclared identifier is reported only once for each function it appears in
main.c:83:3: error: implicit declaration of function 'quickSort' [-Wimplicit-function-declaration]
   83 |   quickSort(B,n,0,n-1);
      |   ^~~~~~~~~
Language: C

#include <stdio.h>
#define MAX 100000
#define SEN 2000000000

typedef struct Card{
  char suit;
  int value;
}C;

C L[MAX/2+2],R[MAX/2+2];

void merge(C A[],int n,int left,int mid,int right){
  int i,j,k;
  int n1=mid-left;
  int n2=right-mid;
  for(i=0;i<n1;i++)L[i]=A[left+i];
  for(i=0;i<n2;i++)R[i]=A[mid+i];
  L[n1].value=R[n2].value=SEN;
  i=j=0;
  for(k=left;k<right;k++){
    if(L[i].value<=R[j].value){
      A[k]=L[i++];
    }
    else {
      A[k]=L[i++];
    }
  }
}

void mergeSort(C A[],int n,int left,int right){
  int mid;
  if(left+1<right){
    mid=(left+right)/2;
    mergeSort(A,n,left,mid);
    mergeSort(A,n,mid,right);
    merge(A,n,left,mid,right);
  }
}

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

void quickSort(C A[],int n,int p,int r){
  int q;
  if(p<r){
    q=partition(A,n,p,r);
    quickSort(A,n,p,q-1);
    quickSort(A,n,q+1,r);
  }
}

int main(){
  int n,i,v;
  C A[MAX],B[MAX];
  char[10];
  int stable=1;

  scanf("%d",&n);

  for(i=0;i<n;i++){
    scanf("%s %d",S,&v);
    A[i].suit=B[i].suit=S[0];
    A[i].value=B[i].value=v;
  }

  mergeSort(A,n,0,n);
  quickSort(B,n,0,n-1);

  for(i=0;i<n;i++){
    if(A[i].suit!=B[i].suit) stable=0;
  }

  if(stable==1) printf("Stable\n");
  else printf("Not stable\n");
  for(i=0;i<n;i++){
    printf("%c %d\n",B[i].suit,B[i].value);
  }
  return 0;
}


Compiler output:
main.c: In function 'main':
main.c:71:7: error: expected identifier or '(' before '[' token
   71 |   char[10];
      |       ^
main.c:77:19: error: 'S' undeclared (first use in this function)
   77 |     scanf("%s %d",S,&v);
      |                   ^
main.c:77:19: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include <stdio.h>
#define N 100000
typedef struct{
  char mark;
  int num;
}card;
int partition(card *,int,int,int);
void quickSort(card *,int,int,int);
void mergeSort(card *,int,int,int);
void merge(card *,int,int,int,int);
card L[N/2+2],R[N/2+2];
int main()
{
  int i,v,n;
  card A1[N],A2[N];
  char S[10];
  int stable=1;
  /*入力*/
  scanf("%d",&n);
  for(i=0;i<n;i++)
  {
    scanf("%s %d",S,&v);
    A1[i].mark=A2[i].mark=S[0];
    A1[i].num=A2[i].num=v;
  }

  mergeSort(A1,n,0,n);
  quickSort(A2,n,0,n-1);


  for(i=0;i<n;i++)
  {
    printf("%c %c\n",A1[i].mark,A2[i].mark);
    if(A1[i].mark != A2[i].mark)
      stable = 0;
  }

  /*出力*/
  if(stable == 1)
    printf("stable\n");
  else
    printf("Not stable\n");
  for(i=0;i<n;i++)
  {
    printf("%c %d\n",A2[i].mark,A2[i].num);
  }
return 0;
}

void quickSort(card A[],int n,int p,int r)
{
  int q;
  if(p < r)
    {
      q = partition(A,n,p,r);
      quickSort(A,n,p,q-1);
      quickSort(A,n,q+1,r);
    }
}

int partition(card A[],int n,int p,int r)
{
  int i,j;
  card x,y;
  x=A[r];
  i=p-1;
  for(j=p;j<r;j++)
  {
    if(A[j].num <= x.num)
    {
      i++;
      y=A[i];
      A[i]=A[j];
      A[j]=y;
    }
  }
  y=A[i+1];
  A[i+1]=A[r];
  A[r]=y;
  return i+1;
}
void merge(card A[],int n,int left,int mid,int right)
{
  int i,j,k,n1, n2;
  n1 = mid - left ;
  n2 = right - mid;
  for(i=0;i<n1;i++)
    L[i] = A[left + i];
  for(i=0;i<n2;i++)
    R[i] = A[mid + i];
    L[n1]=R[n2]=2000000000;
  i = 0;
  j = 0;
  for(k=left;k<right;k++)
    {
      if(L[i].num <= R[j].num)
        {
          A[k] = L[i++];
        }
      else
        {
          A[k] = R[j++];
        }
    }
}
void mergeSort(card B[],int n,int left,int right)
{
  int mid;
  if(left+1 < right)
  {
    mid = (left + right)/2;
     mergeSort(B,n,left,mid);
     mergeSort(B,n,mid,right);
    merge(B,n,left,mid,right);
  }
}



Compiler output:
main.c: In function 'merge':
main.c:91:17: error: incompatible types when assigning to type 'card' from type 'int'
   91 |     L[n1]=R[n2]=2000000000;
      |                 ^~~~~~~~~~
Language: C

#include<stdio.h>
#define MAX 100000
#define SENTINEL 2000000000

struct Card {
    char suit;
    int value;
};

struct Card L[MAX / 2 + 2], R[MAX / 2 + 2];

void merge(struct Card A[], int n, int left, int mid, int right) {
    int i, j, k;
    int n1 = mid - left;
    int n2 = right - mid;
    for ( i = 0; i < n1; i++ ) L[i] = A[left + i];
    for ( i = 0; i < n2; i++ ) R[i] = A[mid + i];
    L[n1].value = R[n2].value = SENTINEL;
    i = j = 0;
    for ( k = left; k < right; k++ ) {
        if ( L[i].value <= R[j].value ) {
            S[k] = L[i++];
        } else {
            A[k] = R[j++];
        }
    }
}

void mergeSort(struct Card A[], int n, int left, int right) {
    int mid;
    if ( left + 1 < right ) {
        mid = (left + right) / 2;
        mergeSort(A, n, left, mid);
        mergeSort(A, n, mid, right);
        merge(A, n, left, mid, right);
    }
}

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

void quickSort(struct Card A[], int n, int p, int r) {
    int q;
    if ( p < r ) {
        q = partition(A, n, p, r);
        quickSort(A, n, p, q - 1);
        quickSort(A, n, q + 1, r);
    }
}
int main(void) {
  int n, i, v;
  struct Card A[MAX], B[MAX];
  char S[10];
  int stable = 1;

  scanf("%d". &n);

  for ( i = 0; i < n; i++ ) {
      scanf("%s %d", S, &v);
      A[i].suit = B[i].suit = S[0];
      A[i].value = B[i].value = v;
  }

  mergeSort(A, n, 0, n);
  quickSort(B, n, 0, n - 1);

  for ( i = 0; i < n; i++ ) {
      // マージソートとクイックソートの結果を比べる
      if ( A[i].suit != B[i].suit ) stable = 0;
  }

  if ( stable == 1 ) printf("Stable\n");
  else printf("Not stable\n");
  for ( i = 0; i < n; i++ ) {
      printf("%c %d\n", B[i].suit, B[i].value);
  }

  return 0;
}



Compiler output:
main.c: In function 'merge':
main.c:22:13: error: 'S' undeclared (first use in this function)
   22 |             S[k] = L[i++];
      |             ^
main.c:22:13: note: each undeclared identifier is reported only once for each function it appears in
main.c: In function 'partition':
main.c:45:37: error: expected expression before '[' token
   45 |         if( A[j].value <= x.value ) [
      |                                     ^
main.c:48:10: error: expected ';' before '}' token
   48 |         ]
      |          ^
      |          ;
   49 |     }
      |     ~     
main.c: In function 'main':
main.c:68:15: error: expected identifier before '&' token
   68 |   scanf("%d". &n);
      |               ^
Language: C

#include<stdio.h>
#define MAX 100000
#define SENTINEL 2000000000

struct X{
  char suit;
  int value;
};

struct X L[MAX / 2 + 2], R[MAX / 2 + 2];

void merge(struct X A[], int n, int left, int mid, int right ){
  int i,j,k;
  int n1 = mid -left,n2 = right - mid;
  for( i = 0 ; i < n1 ; i++ )L[i] = A[left + i];
  for( i = 0 ; i < n2 ; i++ )R[i] = A[mid + i];

  L[n1].value = SENTINEL;
  R[n2].value = SENTINEL;
  i = 0;
  j = 0;
  for( k = left ; k < right ; k++ ){
    if( L[i].value <= R[j].value ){
      A[k] = L[i++];
    }
    else{
      A[k] = R[j++];
    }
  }
}

void mergeSort( struct X A[], int n, int left, int right ){
  int mid;
  if( left + 1 < right ){
    mid = ( right + left ) / 2;
    mergeSort( A, n, left, mid );
    mergeSort( A, n, mid ,right );
    merge( A, n, left, mid, right );
  }
}

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

void quick( struct X A[], int n, int p, int r ){
  int q;
  if ( p < r){
    q = partition( A, n, p, r );
    quick( A, n, p, q - 1 );
    quick( A, n, q + 1, r );
  }
}

int main( void ){
  int n, i, a;
  struct X A[MAX], B[MAX];
  char S[10];
  int stable = 1;

  scanf("%d",&n);

  for( i = 0 ; i < n ; i++ ){
    scanf("%s %d", S, &a);
    A[i].suit = B[i].suit = S[0];
    A[i].value = B[i].value = a;
  }
  mergeSort( A, n, 0, n );
  quick( B, n, 0, n - 1 );

  for( i = 0 ; i < n ; i++ ){
    if ( A[i].suit != B[i].suit )stable = 0;
  }

  if( stable == 1 )printf("Stable\n");
  else printf("Not stable\n");
  for( i = 0 ; i < n ; i++ ){
    printf("%c %d\n",B[i].suit,B[i].value);
  }

  ret

Compiler output:
main.c: In function 'main':
main.c:97:3: error: 'ret' undeclared (first use in this function)
   97 |   ret
      |   ^~~
main.c:97:3: note: each undeclared identifier is reported only once for each function it appears in
main.c:97:6: error: expected ';' at end of input
   97 |   ret
      |      ^
      |      ;
main.c:97:3: error: expected declaration or statement at end of input
   97 |   ret
      |   ^~~
Language: C

#include <stdio.h>
#define N 100000
struct Card
{
  char suit;
  int value;
  int key;
};

struct Card A[N];

int Partition(int p, int r)
{
  int x, i, j;
  struct Card tmp;
  x = A[r],value;
  i = p - 1;

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


void Quicksort(int p, int r)
{
  int q;

  if(p < r)
    {
      q = Partition(p, r);
      Quicksort(p, q - 1);
      Quicksort(q + 1, r);
    }
}


main()
{
  int n, i;
  char ch;

  scanf("%d%c",&n,&ch);

  for(i = 1;i <= n;i++)
    {
      scanf("%c%c%d%c",&A[i].suit,&ch,&A[i].value,&ch);
      A[i].key = i;
    }

  partition(1, n);
  Quicksort(1, n);

  for(i = 1;i <= n;i++)
    {
      if(A[i].value == A[i + 1].value && A[i].key > A[i + 1].key)
	{
	  printf("Not stable\n");
	  break;
	}
    }

      if(i == n + 1)
	{
	  printf("Stable\n");
	}

      for(i = 1;i <= n;i++)
	{
	  printf("%c %d\n",A[i].suit,A[i].value);
	}

      return 0;
}

Compiler output:
main.c: In function 'Partition':
main.c:16:7: error: incompatible types when assigning to type 'int' from type 'struct Card'
   16 |   x = A[r],value;
      |       ^
main.c:16:12: error: 'value' undeclared (first use in this function)
   16 |   x = A[r],value;
      |            ^~~~~
main.c:16:12: note: each undeclared identifier is reported only once for each function it appears in
main.c: At top level:
main.c:51:1: error: return type defaults to 'int' [-Wimplicit-int]
   51 | main()
      | ^~~~
main.c: In function 'main':
main.c:64:3: error: implicit declaration of function 'partition'; did you mean 'Partition'? [-Wimplicit-function-declaration]
   64 |   partition(1, n);
      |   ^~~~~~~~~
      |   Partition
Language: C

struct Card
{
  char suit;
  int value;
  int key;
};

struct Card A[N];

int Partition(int p, int r)
{
  int x, i, j;
  struct Card tmp;
  x = A[r],value;
  i = p - 1;

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


void Quicksort(int p, int r)
{
  int q;

  if(p < r)
    {
      q = Partition(p, r);
      Quicksort(p, q - 1);
      Quicksort(q + 1, r);
    }
}


int main()
{
  int n, i;
  char ch;

  scanf("%d%c",&n,&ch);

  for(i = 1;i <= n;i++)
    {
      scanf("%c%c%d%c",&A[i].suit,&ch,&A[i].value,&ch);
      A[i].key = i;
    }

  partition(1, n);
  Quicksort(1, n);

  for(i = 1;i <= n;i++)
    {
      if(A[i].value == A[i + 1].value && A[i].key > A[i + 1].key)
	{
	  printf("Not stable\n");
	  break;
	}
    }

      if(i == n + 1)
	{
	  printf("Stable\n");
	}

      for(i = 1;i <= n;i++)
	{
	  printf("%c %d\n",A[i].suit,A[i].value);
	}

      return 0;
}

Compiler output:
main.c:8:15: error: 'N' undeclared here (not in a function)
    8 | struct Card A[N];
      |               ^
main.c: In function 'Partition':
main.c:14:12: error: 'value' undeclared (first use in this function)
   14 |   x = A[r],value;
      |            ^~~~~
main.c:14:12: note: each undeclared identifier is reported only once for each function it appears in
main.c: In function 'main':
main.c:54:3: error: implicit declaration of function 'scanf' [-Wimplicit-function-declaration]
   54 |   scanf("%d%c",&n,&ch);
      |   ^~~~~
main.c:1:1: note: include '<stdio.h>' or provide a declaration of 'scanf'
  +++ |+#include <stdio.h>
    1 | struct Card
main.c:54:3: warning: incompatible implicit declaration of built-in function 'scanf' [-Wbuiltin-declaration-mismatch]
   54 |   scanf("%d%c",&n,&ch);
      |   ^~~~~
main.c:54:3: note: include '<stdio.h>' or provide a declaration of 'scanf'
main.c:62:3: error: implicit declaration of function 'partition'; did you mean 'Partition'? [-Wimplicit-function-declaration]
   62 |   partition(1, n);
      |   ^~~~~~~~~
      |   Partition
main.c:69:11: error: implicit declaration of function 'printf' [-Wimplicit-function-declaration]
   69 |           printf("Not stable\n");
      |           ^~~~~~
main.c:69:11: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:69:11: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
main.c:69:11: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:76:11: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
   76 |           printf("Stable\n");
      |           ^~~~~~
main.c:76:11: note: include '<stdio.h>' or provide a declaration of 'printf'
main.c:81:11: warning: incompatible implicit declaration of built-in function 'printf' [-Wbuiltin-declaration-mismatch]
   81 |           printf("%c %d\n",A[i].suit,A[i].value);
      |           ^~~~~~
main.c:81:11: note: include '<stdio.h>' or provide a declaration of 'printf'
Language: C

#include<stdio.h>

#define N 100000

typedef struct{
  char gara;
  int value;
} card;

void Quicksort(int, int);
int Partition(int, int);

card A[N];

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

  scanf("%d", &n);
  for(i = 0; i < n; i++){
    scanf("%c%d", &A[i].gara, &A[i].value);
    B[N] = A[N];
  }
  
  Quicksort(1, n);

    for(i = 0; i < n; i++){
      if(A[i].value > A[i+1].value && A[i].gara == A[i+1].gara) s++;
    }
     
  if(s == 0) printf("Stable\n");
  else printf("Not stable\n");
  
  for(i = 1; i <= n; i++) printf("%c %d\n", A[i].gara, A[i].value);

  return 0;
  
}

void Quicksort(int p, int r){
  int q;

  if(p < r){
    q = Partition(p, r);
    Quicksort(p, q - 1);
    Quicksort(q + 1, r);
  }
}

int Partition(int p, int r){
  int i, j, x;
  card y;

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

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

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

  return i+1;

}

Compiler output:
main.c: In function 'main':
main.c:21:5: error: 'B' undeclared (first use in this function)
   21 |     B[N] = A[N];
      |     ^
main.c:21:5: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include<stdio.h>

#define N 100000

typedef struct{
  char gara;
  int value;
} card;

void Quicksort(int, int);
int Partition(int, int);

card A[N], B[N];

int main(){
  int n, i, s = 0;

  scanf("%d", &n);
  for(i = 0; i < n; i++){
    scanf(" %c%d", &A[i].gara, &A[i].value);
    B[i] = A[i];
  }
  
  Quicksort(1, n);

    for(i = 0; i < n; i++){
      for(j = i; j < n; j++){
	for(k = 0; k < n; k++){
	  for(l = k; k < n; l++){
	    if(A[i].value == A[j].value && A[i].value == B[l].value && A[i].gara == B[l].gara && A[j].value == B[k].value) s++;
    }
     
  if(s != 0) printf("Stable\n");
  else printf("Not stable\n");
  
  for(i = 1; i <= n; i++) printf("%c %d\n", A[i].gara, A[i].value);

  return 0;
  
}

void Quicksort(int p, int r){
  int q;

  if(p < r){
    q = Partition(p, r);
    Quicksort(p, q - 1);
    Quicksort(q + 1, r);
  }
}

int Partition(int p, int r){
  int i, j, x;
  card y;

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

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

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

  return i+1;

}

Compiler output:
main.c: In function 'main':
main.c:27:11: error: 'j' undeclared (first use in this function)
   27 |       for(j = i; j < n; j++){
      |           ^
main.c:27:11: note: each undeclared identifier is reported only once for each function it appears in
main.c:28:13: error: 'k' undeclared (first use in this function)
   28 |         for(k = 0; k < n; k++){
      |             ^
main.c:29:15: error: 'l' undeclared (first use in this function)
   29 |           for(l = k; k < n; l++){
      |               ^
main.c:74:1: error: expected declaration or statement at end of input
   74 | }
      | ^
main.c:74:1: error: expected declaration or statement at end of input
main.c:74:1: error: expected declaration or statement at end of input
Language: C

#include<stdio.h>
#include<stdlib.h>
typedef struct{
  int value;
  char sign;
} Card;
int partition(Card*,int,int);
void quickSort(Card*,int,int);
int isStable(Card*,Card*,int);

int main() 
{
  int i,n;
  Card *a,*b;
  
  scanf("%d",&n);
  a=(Card*)malloc(sizeof(Card)*n);
  b=(Card*)malloc(sizeof(Card)*n);
  for(i=0; i<n; i++) {
    scanf(" %c%d",&a[i].sign,&a[i].value);
    b[i] = a[i];
  }
  quickSort(a,0,n-1);
  if(!isStable(b,a,n)) printf("Stable\n");
  else printf("Not stable\n");
  for(i=0; i<n; i++) 
    printf("%c %d\n",a[i].sign,a[i].value);
  
  free(a);
  free(b);
  
  return 0;
}

void quickSort(Card a[],int p,int r) 
{
  int q;
  if(p<r) {
    q = partition(a,p,r);
    quickSort(a,p,p-1);
    quickSort(a,p+1,r);
  }
}

int partition(Card a[],int p,int r)
{
  int x,i,j;
  Card tmp;
  x = a[r].value;
  i = p-1;
  for(j=p; j<r; j++) {
    if(a[j].value<=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 isStable(Card in[],Card out[],int n) 
{
  int i,j,a,b;
  for(i=0; i<n; i++) 
    for(j=i+1; j<n; j++)
      for(a=0; a<n; a++)
	for(b=a+1; b<n; b++)
	  return in[i].value == in[j].value && in[i].sign == out[b].sign && in[j].sign == out[a].sign && in[i].value == out[b].value && in[j].value == out[a].value);
}

Compiler output:
main.c: In function 'isStable':
main.c:72:164: error: expected ';' before ')' token
   72 |           return in[i].value == in[j].value && in[i].sign == out[b].sign && in[j].sign == out[a].sign && in[i].value == out[b].value && in[j].value == out[a].value);
      |                                                                                                                                                                    ^
      |                                                                                                                                                                    ;
main.c:72:164: error: expected statement before ')' token
Language: C

#include <stdio.h>
typedef struct{
  char c;
  int num;
} Card;

void quickSort(Card [],int,int);
int partition(Card [],int,int);

int main(){

  int i,j,n,k,l,flag=0;
  Card card[100];
  Card card2[100];

  scanf("%d",&n);

 for(i=0;i<n;i++){
   scanf(" %c %d",&card[i].c, &card[i].num);
   card2[i].c = card[i].c;
   card2[i].num = card[i].num;
 }

 quickSort(card,0,n-1);

 for(i=0;i<n;i++)
    {
      for(j=i+1;j<n;j++)
	{
	  for(k=0;k<n;k++)
	    {
	      for(l=k+1;l<n;l++)
		{
		  if(card2[i].num == card2[j].num && card2[i].c == card1[l].c && card2[j].c == card[k].c)
		    {
		      flag=1;
		    }
		}
	    }
	}
    }
  
  if(flag == 0)
    {
      printf("Stable\n");
    }
  else
    {
     printf("Not stable\n");
    }

 for(i=0;i<n;i++){
   printf("%c %d\n",card[i].c,card[i].num);
 }

 return 0;
}

void quickSort(Card A[],int p,int r){

  int q;

  if(p < r){
    q = partition(A,p,r);
    quickSort(A,p,q-1);
    quickSort(A,q+1,r);
  }
}

int partition(Card A[],int p,int r){

  int  i,j,x;
  Card temp;

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

Compiler output:
main.c: In function 'main':
main.c:34:68: error: 'card1' undeclared (first use in this function); did you mean 'card2'?
   34 |                   if(card2[i].num == card2[j].num && card2[i].c == card1[l].c && card2[j].c == card[k].c)
      |                                                                    ^~~~~
      |                                                                    card2
main.c:34:68: note: each undeclared identifier is reported only once for each function it appears in
Language: C

#include <stdio.h>
typedef struct{
  char c;
  int num;
  int count;
} Card;

void quickSort(Card [],int,int);
int partition(Card [],int,int);

int main(){

  int i,j,n,k,l,flag=0;
  Card card[100000];
  Card card2[100000];

  scanf("%d",&n);

 for(i=0;i<n;i++){
   scanf(" %c %d",&card[i].c, &card[i].num);
   card[i].count = i;
 }

 quickSort(card,0,n-1);


 for(i=1;i<n;i++){
   if(card[i-1].num == card[i].num && card[i-1].count > carrd[i].count){
     flag = 1;
   }
   if(flag == 1){
     printf("Not stable\n");
   }
   else{
     printf("Stable\n");
   }

 for(i=0;i<n;i++){
   printf("%c %d\n",card[i].c,card[i].num);
 }

 return 0;
}

void quickSort(Card A[],int p,int r){

  int q;

  if(p < r){
    q = partition(A,p,r);
    quickSort(A,p,q-1);
    quickSort(A,q+1,r);
  }
}

int partition(Card A[],int p,int r){

  int  i,j,x;
  Card temp;

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

Compiler output:
main.c: In function 'main':
main.c:28:57: error: 'carrd' undeclared (first use in this function); did you mean 'card'?
   28 |    if(card[i-1].num == card[i].num && card[i-1].count > carrd[i].count){
      |                                                         ^~~~~
      |                                                         card
main.c:28:57: note: each undeclared identifier is reported only once for each function it appears in
main.c:75:1: error: expected declaration or statement at end of input
   75 | }
      | ^
Language: C


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

void quick_sort(int *,int,int,char *);

int main()
{
  int n; //?????°??£?¨?
  int i;


  scanf("%d",&n);//?????????????????°n???????????????

  char *quick_char = (char*)malloc(sizeof(char)*n);//?????????????????????????¬??????????
  int *quick_int = (int*)malloc(sizeof(int)*n);//??????????????°??????????¬??????????

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

  quick_sort(&quick_int[0],0,n-1,&quick_char[0]);

  printf("Not stable\n");
  for(i=0;i<n;i++)
  {
    printf("%c",quick_char[i]);
    printf(" %d",quick_int[i]);
    puts("");
  }

  return 0;
} 

//quicksort??¢??°

void quick_sort(int *quick_int,int left,int right,char *quick_char)
{
  int s,t,i,j;
  char c,ca;

  if(left < right)
  {
    s = quick_int[left];
    ca = quick_char[left];
    i = left;
    j = right + 1;

    while(1)

Compiler output:
main.c: In function 'quick_sort':
main.c:51:5: error: expected expression at end of input
   51 |     while(1)
      |     ^~~~~
main.c:51:5: error: expected declaration or statement at end of input
main.c:51:5: error: expected declaration or statement at end of input
Language: C

#include <stdio.h>

#define N 100000

int partition(char *, int, int);
void quicksort(char *, int, int);

char A[N];

int main(){

  int n, i, j, a, c;

  scanf("%d", &n);

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

  quicksort();

  return 0;
}

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

  int x, i, 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;
  
}

void quicksort(char *A, int p, int r){

  int q;

  if(p < r){
    q = partition(A,p, r);
    quicksort(A, p, q-1);
    quicksort(A, q+1, r);
  }
}

Compiler output:
main.c: In function 'main':
main.c:20:3: error: too few arguments to function 'quicksort'
   20 |   quicksort();
      |   ^~~~~~~~~
main.c:6:6: note: declared here
    6 | void quicksort(char *, int, int);
      |      ^~~~~~~~~
Language: C

#include<stdio.h>
#define MAX 100000
#define SENTINEL 2000000000

struct Card{
  char suit;
  int value;
};

struct Card L[MAX / 2 + 2],R[MAX / 2+2];

voidmerge(struct Card A[], int n,int left,int mid inttight){
  int i,j,k;
  int n1 = mid -left;
  int n2 = right - mid;
  for(i=0;i<n1;i++)L[i] = A[left + i];
  for(i=0;i<n2;i++)R[i] = A[mid + i];
  L[n1].value = R[n2].value = SENTINEL;
  i=j=0
    for(k = left; k<right;k++){
      if(L[i].value <=R[j].value){
	A[k]= L[i++];
      }else{
	A[k]= R[j++];
      }
    }
}

void mergeSort(struct Card A[], int n,int left,int right){
  int mid;
  if(left + 1 < right){
    mid = (left + right) /2;
    mergeSort(A,n,left,mid);
    mergeSort(A,n,mid.right);
    merge(A,n,left,mid,right);
  }
}

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

void quickSort(struct Card A[],int n,int p,int r){
  int q;
  if(p<r){
    q = partition(A,n,p,r);
    quickSort(A,n,p,q-1);
    quickSort(A,n,q+1,r);
  }
}

int main(){
  int n,i,v;
  struct Card A[MAX],B[MAX];
  char S[10];
  int stable =1;
  
  scanf("%d", &n);
  
  for(i = 0; i < n; i++){
    scanf("%s %d",S,&v);
    A[i].suit = B[i].suit = S[0];
    A[i].value = B[i].value = v;
  }
  
  mergeSort(A,n,0,n);
  quickSort(B,n,0,n-1);
  
  for(i = 0; i < n;i++){
    if(A[i].suit != B[i].suit) stable = 0;
  }
  
  if(stable == 1)printf("stable\n");
  else printf("Not stable\n");
  for(i=0;i<n;i++){
    printf("%c %d\n",B[i].suit,B[i].value);
  }
  
  return 0;
}

Compiler output:
main.c:12:51: error: expected ';', ',' or ')' before 'inttight'
   12 | voidmerge(struct Card A[], int n,int left,int mid inttight){
      |                                                   ^~~~~~~~
main.c: In function 'mergeSort':
main.c:34:22: error: request for member 'right' in something not a structure or union
   34 |     mergeSort(A,n,mid.right);
      |                      ^
main.c:34:5: error: too few arguments to function 'mergeSort'
   34 |     mergeSort(A,n,mid.right);
      |     ^~~~~~~~~
main.c:29:6: note: declared here
   29 | void mergeSort(struct Card A[], int n,int left,int right){
      |      ^~~~~~~~~
main.c:35:5: error: implicit declaration of function 'merge' [-Wimplicit-function-declaration]
   35 |     merge(A,n,left,mid,right);
      |     ^~~~~