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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;
  8.     int a,b;
  9.     int **mat;
  10.     scanf("%d %d",&a,&b);
  11.  
  12. 	//ここで2次元配列の動的確保をする
  13.  
  14.  
  15.     mat = (int *)malloc(sizeof(int )*a);
  16.     if(mat == NULL){
  17.         printf("ERROR\n");
  18.         return 0;
  19.     }
  20.     for(i=0;i<a;i++){
  21.         mat[i] = (int *)malloc(sizeof(int)*b);
  22.         if(mat[i] == NULL){
  23.             printf("ERROR\n");
  24.             return 0;
  25.         }
  26.     }
  27.     k = 1;
  28.     for(i=0;i<a;i++){
  29.         for(j=0;j<b;j++){
  30.             mat[i][j] = k++;
  31.         }
  32.     }
  33.  
  34.         //以下の部分は表示の部分です
  35.     	//いじらなくてOK
  36.  
  37.  
  38.     for(i=0;i<a;i++){
  39.         for(j=0;j<b;j++){
  40.             printf("%d ",mat[i][j]);
  41.         }
  42.         printf("\n");
  43.     }
  44.  
  45.  
  46.     for(i=0;i<a;i++){
  47.         free(mat[i]);
  48.     }
  49.     free(mat);
  50.     return 0;
  51. }
  52.  
Success #stdin #stdout 0s 5304KB
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https://ideone.com/l6IGSm
language:
C (gcc 8.3)
created:
13 days ago
visibility:
public

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