Reference no: EM132158157

Use the isPrime function that you wrote in Programming Challenge 22 in a program that stores a list of all the prime numbers from 1 through 100 in a file.

Modify the program to allow the user to enter the range (both smallest and largest value) to be considered as well as the desired output file name.

The output file should be space delimited.

Provide a flowchart for the isPrime function.

This is what I have,

#include <iostream>
#include <fstream>
using namespace std;

bool isPrime(int);

int main()
{
int num=0;
int i;
bool prime;

ofstream outFile;
outFile.open("PrimeList.txt");

while(num == 0)
{
cin >> num;
}

for(i=2;i<num;i++)
if(isPrime(i))
outFile << i << "\n";

cout << "Prime numbers written to PrimeList.txt.\n";
outFile.close();
return 0;
}
bool isPrime(int n)
{
int i;
for(i=2;i<n-1;i++)
if(n%i==0)
return false;
return true;
}