fork download 
  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.     mat=(int **)malloc(sizeof(int *)*a);
  10.     if(mat==NULL){
  11.     	printf("error");
  12.     	return 0;
  13.     }
  14.     for(i=0;i<a;i++){
  15.     	mat[i]=(int **)malloc(sizeof(int )*b);
  16.     	if(mat[i]==NULL){
  17.     		printf("error");
  18.     		free(mat);
  19.     		return 0;
  20.     	}
  21.     }
  22.     int n=0;
  23.     for(i=0;i<a;i++){
  24.     	for(j=0;j<b;j++){
  25.     		n++;
  26.     		mat[i][j]=n;
  27.     	}
  28.     }
  29.     for(i=0;i<a;i++){
  30.         for(j=0;j<b;j++){
  31.             printf("%d ",mat[i][j]);
  32.         }
  33.         printf("\n");
  34.     }
  35. 	free(mat);
  36.     return 0;
  37. }
  38.  
  39.  
Success #stdin #stdout 0s 5276KB
comments (?)
stdin 
4 5
stdout 
1 2 3 4 5 
6 7 8 9 10 
11 12 13 14 15 
16 17 18 19 20
https://ideone.com/PhVz4Z
language:
C (gcc 8.3)
created:
9 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!