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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.     mat = malloc(a * sizeof(int *));
  10.     if(mat == NULL){
  11.         perror("malloc");
  12.         return 1;
  13.     }
  14.     for(i = 0; i < a; i++){
  15.         mat[i] = malloc(b * sizeof(int));
  16.         if(mat[i] == NULL){
  17.             perror("malloc");
  18.             while(--i >= 0) free(mat[i]);
  19.             free(mat);
  20.             return 1;
  21.         }
  22.     }
  23.  
  24.     k = 1;
  25.     for(i = 0; i < a; i++){
  26.         for(j = 0; j < b; j++){
  27.             mat[i][j] = k++;
  28.         }
  29.     }
  30.  
  31.     for(i = 0; i < a; i++){
  32.         for(j = 0; j < b; j++){
  33.             printf("%d ", mat[i][j]);
  34.         }
  35.         printf("\n");
  36.     }
  37.  
  38.     for(i = 0; i < a; i++){
  39.         free(mat[i]);
  40.     }
  41.     free(mat);
  42.  
  43.     return 0;
  44. }
Success #stdin #stdout 0s 5316KB
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https://ideone.com/R8s2ME
language:
C (gcc 8.3)
created:
7 days ago
visibility:
public

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