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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. //必要があれば変数などを追加してもOKです
  5.  
  6. int main(){
  7.     int i,j,k=1;
  8.     int a,b;
  9.     int **mat;
  10.     scanf("%d %d",&a,&b);
  11.  
  12.    mat = (int **)malloc(a * sizeof(int *));
  13.     if (mat == NULL) {
  14.         printf("メモリ割り当てに失敗しました\n");
  15.         return 1;
  16.     }
  17.     for (i = 0; i < a; i++) {
  18.         mat[i] = (int *)malloc(b * sizeof(int));
  19.         if (mat[i] == NULL) {
  20.             printf("メモリ割り当てに失敗しました\n");
  21.             return 1;
  22.         }
  23.     }
  24.  for(i=0;i<a;i++){
  25.         for(j=0;j<b;j++){
  26.             mat[i][j]=k++;
  27.         }
  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.     free(mat);
  39.  
  40.  
  41.     return 0;
  42. }
  43.  
Success #stdin #stdout 0s 5280KB
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https://ideone.com/MdlPGQ
language:
C (gcc 8.3)
created:
6 days ago
visibility:
public

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