fork download
copy 
  1. #include <stdio.h>
  2. #include <stdlib.h>
  3.  
  4. int main(void) {
  5. 	int a,b;
  6. 	scanf("%d %d",&a,&b);
  7.  
  8. 	int **mat;
  9.  
  10. 	mat =malloc(sizeof(int*)*a);
  11. 	if(mat == NULL){
  12.         printf("ERROR\n");
  13.         return 0;
  14.     }
  15.  
  16.     for(int i = 0; i < a; i++){
  17.     	mat[i] =malloc(sizeof(int)*b);
  18. 		if(mat[i] == NULL){
  19.         	printf("ERROR\n");
  20.         	for(int j = 0; j < i; j++){
  21.         		free(mat[j]);
  22.     		}
  23.     		free(mat);
  24.         	return 0;
  25.     	}
  26.     }
  27.  
  28.     for(int i = 0; i < a; i++){
  29.     	for(int j = 0; j < b; j++){
  30.     	mat[i][j] = (j+1)+i*b;
  31.     	}
  32.     }
  33.  
  34.     for(int i = 0; i < a; i++){
  35.     	for(int j = 0; j < b; j++){
  36.     	printf("%d ",mat[i][j]);
  37.     	}
  38.     	printf("\n");
  39.     }
  40.  
  41. 	for(int i = 0; i < a; i++){
  42.         free(mat[i]);
  43.     	}
  44.     free(mat);
  45. 	return 0;
  46. }
  47.  
Success #stdin #stdout 0s 5348KB
comments (?)
stdin
copy 
3 4
stdout
copy 
1 2 3 4 
5 6 7 8 
9 10 11 12
https://ideone.com/tJkc8D
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!