Problem 6.3 LET US C SOLUTION

 PROBLEM 6.3

Write a  program to generate all combinations of 1,2 and 3 using
for loop.  */
#include<stdio.h>
int main()
{
	int i=1,j=1,k=1;
	for(i=1;i<=3;i++)
	{
		for(j=1;j<=3;j++)
		{
			for(k=1;k<=3;k++)
			printf("%d%d%d\n",i,j,k);
		}
	}
	return 0;
}