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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(a * sizeof(int *));
  12.     if (mat == NULL) {
  13.         printf("メモリの確保に失敗しました\n");
  14.         return 1;
  15.     }
  16.  
  17.     for (i = 0; i < a; i++) {
  18.         mat[i] = (int *)malloc(b * sizeof(int));
  19.         if (mat[i] == NULL) {
  20.             printf("メモリの確保に失敗しました\n");
  21.             return 1;
  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.         }
  30.     }
  31.  
  32.     for (i = 0; i < a; i++) {
  33.         for (j = 0; j < b; j++) {
  34.             printf("%d ", mat[i][j]);
  35.         }
  36.         printf("\n");
  37.     }
  38.  
  39.     free(mat);
  40.  
  41.     return 0;
  42. }
  43.  
Success #stdin #stdout 0s 5248KB
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https://ideone.com/EFwYxr
4.1-1
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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