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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.     mat=(int**)malloc(sizeof(int*)*a);
  14.     if(mat==NULL){
  15.     	printf("error\n");
  16.     	return 0;
  17.  
  18.     }
  19.  
  20.      for(i=0;i<a;i++){
  21.         mat[i]=(int*)malloc(sizeof(int)*b);
  22.         if(mat[i]==NULL){
  23.             printf("error2\n");
  24.             return 0;
  25.         }}
  26.     k=1;
  27.     for(i=0;i<a;i++){
  28.     	for(j=0;j<b;j++){
  29.     		mat[i][j]=k++;
  30.  
  31.  
  32.     	}
  33.     }
  34.     for(i=0;i<a;i++){
  35.     	for(j=0;j<b;j++){
  36.     		printf("%d",mat[i][j]);
  37.  
  38.     	}
  39.     	printf("\n");
  40.     }
  41.     for(i=0;i<a;i++){
  42.     	free(mat[i]);
  43.   	}
  44.     free(mat);
  45.  
  46.  
  47.  
  48.  
  49.     return 0;
  50. }
  51.  
Success #stdin #stdout 0s 5288KB
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https://ideone.com/75cHyu
language:
C (gcc 8.3)
created:
13 days ago
visibility:
public

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