fork download
copy 
  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. int main(){
  5.     int i,j,k;
  6.     int a,b;
  7.     int **mat;
  8.     scanf("%d %d",&a,&b);
  9.  
  10.  
  11.     mat = (int **)malloc(sizeof(int *)*a);
  12. 	if(mat == NULL){
  13. 		printf("ERROR\n");
  14. 		return 0;
  15. 	}
  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. 	k=1;
  26. 	for(i = 0; i < a; i++){
  27. 		for(j = 0; j < b; j++){
  28. 			mat[i][j] = k;
  29. 			k++;
  30. 		}
  31. 	}
  32.  
  33.  
  34.  
  35.     //以下の部分は表示の部分です
  36.     //いじらなくてOK
  37.     for(i=0;i<a;i++){
  38.         for(j=0;j<b;j++){
  39.             printf("%d ",mat[i][j]);
  40.         }
  41.         printf("\n");
  42.     }
  43.  
  44.     free(mat);
  45.  
  46.  
  47.     return 0;
  48. }
  49.  
Success #stdin #stdout 0.01s 5320KB
comments (?)
stdin
copy 
2 3
stdout
copy 
1 2 3 
4 5 6
https://ideone.com/kV17CS
language:
C (gcc 8.3)
created:
2 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!