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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.  
  9.     scanf("%d %d", &a, &b);
  10.  
  11.     mat = (int **)malloc(sizeof(int *) * a);
  12.     if(mat == NULL){
  13.         printf("ERROR\n");
  14.         return 0;
  15.     }
  16.     for(i = 0; i < a; i++){
  17.         mat[i] = (int *)malloc(sizeof(int) * b);
  18.         if(mat[i] == NULL){
  19.             printf("ERROR\n");
  20.             return 0;
  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.  
  42.     free(mat);
  43.     return 0;
  44. }
  45.  
Success #stdin #stdout 0s 5288KB
comments (?)
stdin 
2 3
stdout 
1 2 3 
4 5 6
https://ideone.com/93P2fP
language:
C (gcc 8.3)
created:
9 days ago
visibility:
public

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