Question

Use a C++ program to run your code that prompts the user to enter an integer, greater or equal to 2, and displays its largest factor other than itself.

To answer for this question, It is required that you use following two functions to complete the assignment.

a.     // Prompts the user to enter an integer: number >=2

        void getNumber( int& number);

b.     // returns the largest factor of n other than itself

        int getLargestNonSelfFactor(int n);

Answer 1

C++ Code:

#include <iostream>

#include <cmath>

using namespace std;

void getNumber(int &num){

do{

cout<<"Enter a number greater than or equal to 2: ";

cin>>num;

}while(num<2);

}

int getLargestNonSelfFactor(int n){

int factor;

for(int i=3;i<n;i++){

if(n%i==0)

factor=i;

}

return factor;

}

int main() {

int num;

getNumber(num);

cout<<"Largest non self factor of "<<num<< " is "<<getLargestNonSelfFactor(num);

}

https://RichBasicManagement.kunlstudy.repl.run clang version 7.0.0-3-ubuntu0.18.04.1 (tags/RELEASE_700/final) clang++-7 pthread -o main main.cpp } ./main Enter a number greater than or equal to 2: 20 Largest non self factor of 20 is 101

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