why do i get a SIGSEGV runtime error?

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

int main()
{
int N,D,A,B;
int count=0;
scanf("%d\t%d",&N,&D);
// printf("\n");
scanf("%d\t%d",&A,&B);
// printf("\n");
int S[N];
for(int i=0;i<N;i++)
scanf("%d",&S[i]);
// printf("\n");
int t[N];
for(int i=0;i<N;i++)
t[i] = S[i] - D;

 typedef struct{
     int remA;
     int remB;
 }arr;
 arr a[N];
  
      for(int i=0;i<N;i++){
          a[i].remA = t[i]%A;
          a[i].remB = t[i]%B;
      }
  
  

      for(int i=0;i<N;i++){
        
          int b = (a[i].remB)%A;
          int c =(a[i].remA) % B;
          int d =a[i].remA;
          int e = a[i].remB;
          if((!d || !c) || (!b ||!e))
           count++;
      }
      
  
  
  printf("%d",count);
return 0;

Please format the code, and also provide the question link too

I am not getting any seg fault with below code. And it is very unusual to have a \t switch inside scanf() and the typedef inside the main() function.

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

int main() { 
    int N,D,A,B; 
    int count=0; 
    
    scanf("%d\t%d",&N,&D); // printf("\n"); 
    scanf("%d\t%d",&A,&B); // printf("\n"); 
    int S[N]; 
    
    for(int i=0;i<N;i++) scanf("%d",&S[i]); // printf("\n"); 
    
    int t[N]; 
    
    for(int i=0;i<N;i++) t[i] = S[i] - D;

     typedef struct{
         int remA;
         int remB;
     }arr;
 
    arr a[N];

      for(int i=0;i<N;i++){
          a[i].remA = t[i]%A;
          a[i].remB = t[i]%B;
      }



      for(int i=0;i<N;i++){

          int b = (a[i].remB)%A;
          int c =(a[i].remA) % B;
          int d =a[i].remA;
          int e = a[i].remB;
          if((!d || !c) || (!b ||!e))
           count++;
      }



    printf("%d",count);
    return 0;
}

SIGSEGV - seg. fault occurs mostly because you are trying to access a memory location which you are not supposed to. This commonly happens when you try to access a location which is out of range of the array declared.

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