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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. int main(){
  4.     int i,j,k;
  5.     int a,b;
  6.     int **mat;
  7.     scanf("%d %d",&a,&b);
  8.     mat = (int **)malloc(sizeof(int *)*a);
  9.     if(mat == NULL){
  10.         printf("ERROR\n");
  11.         return 0; }
  12.     for(i=0;i<a;i++){
  13.         mat[i] = (int *)malloc(sizeof(int)*b);
  14.         if(mat[i] == NULL){
  15.             printf("ERROR\n");
  16.             return 0; }
  17.     }
  18.     k = 1;
  19.     for(i=0;i<a;i++){
  20.         for(j=0;j<b;j++){
  21.             mat[i][j] = k++;}
  22.     }
  23.     for(i=0;i<a;i++){
  24.         for(j=0;j<b;j++){
  25.             printf("%d ",mat[i][j]); }
  26.         printf("\n");
  27.   }
  28.     for(i=0;i<a;i++){
  29.         free(mat[i]);
  30.     }
  31.     free(mat);
  32.     return 0;
  33. }
  34.  
Success #stdin #stdout 0.01s 5308KB
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https://ideone.com/7Ay0Sm
language:
C (gcc 8.3)
created:
13 days ago
visibility:
public

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