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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. mat=(int**)malloc(sizeof(int*)*a);
  13. if(mat==NULL){
  14. printf("ERROR\n");
  15. return 0;
  16. }
  17. for(i=0;i<a;i++){
  18. mat[i]=(int*)malloc(sizeof(int)*b);
  19. if(mat[i]==NULL){
  20. printf("ERROR\n");
  21. return 0;
  22. }
  23. }
  24.  
  25.  
  26.  
  27.     for(i=0;i<a;i++){
  28.         for(j=0;j<b ;j++){
  29.             printf("%d ",mat[i][j]);
  30.         }
  31.         printf("\n");
  32.     }
  33.  
  34.     free(mat);
  35.     return 0;
  36. }
  37.  
Success #stdin #stdout 0.01s 5288KB
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stdin
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2 3
stdout
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0 0 0 
0 0 0
https://ideone.com/nIAvbg
4課題2.1
language:
C (gcc 8.3)
created:
12 days ago
visibility:
public

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