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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.     	mat=(int**)malloc(sizeof(int*)*a);
  15.     	if(mat==NULL){
  16.     		printf("error\n");
  17.     		return 0;
  18.     	}
  19.     	for(i=0;i<a;i++){
  20.     		mat[i]=(int*)malloc(sizeof(int*)*b);
  21.     		if(mat[i]==NULL){
  22.     			printf("error\n");
  23.     			return 0;
  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.     		for(i=0;i<a;i++){
  32.     			for(j=0;j<b;j++){
  33.     				printf("%d",mat[i][j]);
  34.  
  35.     			}
  36.     			printf("\n");
  37.     		}
  38.     		for(i=0;i<a;i++){
  39.  
  40.     			free(mat[i]);
  41.     		}
  42.     		free(mat);
  43.     		return 0;
  44. }
  45.  
  46.  
  47.  
  48.  
  49.  
  50.  
  51.  
  52.  
Success #stdin #stdout 0s 5320KB
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https://ideone.com/RbJvBB
language:
C (gcc 8.3)
created:
12 days ago
visibility:
public

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