Chapter 1, Problem 3C

Explanation of Solution

Program code:

//include the required header files

#include<iostream>

#include<vector>

//use std namespace

using namespace std;

//define main() function

int main()

{

//create vector a

vector<int> a;

//declare required integer variables

int n;

int inp;

int count;

//prompt the user to enter the number of elements

cout << "Enter number of elements:" << endl;

//scan for the value

cin >> n;

//prompt the user to enter the number

cout << "Enter numbers:" << endl;

//iterate a for loop

for (int i = 0; i<n; i++)

{

//scan for the values

cin >> inp;

//push in to the vector

a.push_back(inp);

}

//iterate a for loop

for (int i = 0; i<n; i++)

{

//set the count equal to 0

count = 0;

//iterate a for loop

for (int j=0; j<n; j++)

{

    //if the value of "j" is not equal to "i"

    if (j != i)

    {

        //if the value of at i and j are equal

        if (a[i] == a[j])

            //increment the count

            count++;

    }

    }

    //if the value of count is greater than 0

    if (count > 0)

        //break

        break;

}

...