fork download
copy 
  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.  
  17.     for (i = 0; i < a; i++) {
  18.         mat[i] = (int *)malloc(sizeof(int) * b);
  19.         if (mat[i] == NULL) {
  20.             printf("ERROR\n");
  21.             return 0;
  22.         }
  23.     }
  24.  
  25.     k = 1;
  26.     for (i = 0; i < a; i++) {
  27.         for (j = 0; j < b; j++) {
  28.             mat[i][j] = k;
  29.             k++;
  30.         }
  31.     }
  32.  
  33.     for (i = 0; i < a; i++) {
  34.         for (j = 0; j < b; j++) {
  35.             printf("%d ", mat[i][j]);
  36.         }
  37.         printf("\n");
  38.     }
  39.  
  40.     for (i = 0; i < a; i++) {
  41.         free(mat[i]);
  42.     }
  43.     free(mat);
  44.  
  45.     return 0;
  46. }
  47.  
Success #stdin #stdout 0.01s 5288KB
comments (?)
stdin
copy 
2 3
stdout
copy 
1 2 3 
4 5 6
https://ideone.com/OYMW6b
language:
C99 (gcc 8.3)
created:
9 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!