Question

Develop a C++ program that determines the largest and second largest positive values in a collection of data

Prompt the user to enter integer values until they enter any negative value to quit

• You may presume the user will input at least two valid integer values

Create a loop structure of some sort to execute this input cycle

Maintain the largest and second largest integer as the user inputs data

• This logic should be placed inside your loop structure
• Arrays are not needed to solve the problem!

Display the largest and second largest values entered by the user

Answer 1

[C++ CODE]

#include<iostream>
#include<stdio.h>

using namespace std;

int main()
{
        int i, high, high_2, count=0, num;              //high is the largest value and high_2 is the second largest 
        cout<<"Enter the integers value and enter -ve value to quit : "<<endl;
        do{
             cin>>num;
             count++;
             if(count==1)                       //if first integer, high and second highest will be same 
             {
                  high = num;
                  high_2 = num;
             }
             else if(num < 0)  // if num is negative it will break out 
             {
                 break;
             }
             else if(num>high)
             {
                  high_2 = high; 
                  high = num; 
             }
             else if(num>high_2)
             {
                  high_2=num;
             }
         }while(num > 0);
        cout<<endl<<"Largest value is "<<high<<endl<<"Second largest value is "<<high_2;
        return 0;
}

SCREENSHOT:

OUTPUT:

EXPLANATION:

Two integer variables high and high_2 are taken to store the largest and second-largest values.

Integer value taken by the user is stored in num variable.

the count is the number of integers taken by the user.

At first, when count=1, then high and high_2 are assigned by num value and in second input it is checked if it is greater than high then high is shifted to high_2 and num is shifted to high.

If num is greater than high_2 and less than high than num value is shifted to high_2.

And this process continues till the end of the loop.