33. Program to generate all possible combinations of 1, 2, 3 and 4.

Chapter 6: 

Looping Structures

Programming Exercise

Problem # 33:

Write a program to generate all possible combinations of 1, 2, 3 and 4.

Solution:

#include<iostream>
#include<conio.h>
using namespace std;
int main()
{
    int i, j, k, l;
    for(i=1;i<=4;i++)
    {
        for(j=1;j<=4;j++)
        {
            for(k=1;k<=4;k++)
            {
                for(l=1;l<=4;l++)
                cout<<i<<j<<k<<l<<"\t";
            }
        }
    }
}

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34. Program that inputs starting and ending numbers and display all prime number ending with digit 7 between the given range in descending order.