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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. int main(){
  5.     int i,j,k;
  6.     int a,b;
  7.     int **mat;
  8.     scanf("%d %d",&a,&b);
  9.  
  10.     mat = (int**)malloc(sizeof(int*)*a);
  11.     if(mat[i]==NULL){
  12.     	printf("ERROR\n");
  13.     	return 0;
  14.     }
  15.     for(i=0;i<a;i++){
  16.     	mat[i] = (int*)malloc(sizeof(int)*b);
  17.     	if(mat[i]==NULL){
  18.     		printf("ERROR\n");
  19.     		return 0;
  20.     	}
  21.     }
  22.     for(i=0;i<a;i++){
  23.     	for(j=0;j<b;j++){
  24.     		mat[i][j] = k++;
  25.     		printf("%d",mat[i][j]);
  26.     	}
  27.     	printf("\n");
  28.     }
  29.     for(i=0;i<a;i++){
  30.     	free(mat[i]);
  31.     }
  32. 	free(mat);
  33.     return 0;
  34. }
  35.  
Success #stdin #stdout 0s 5320KB
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ERROR
https://ideone.com/dtlbJy
language:
C (gcc 8.3)
created:
9 days ago
visibility:
public

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