Question

C++ please

Question 4: 125 points] Write and test a program that reads two positive integers nl and n2 with n2 > nl. The program then calculates the sum of the prime numbers, using is prime () function developed above, between nl and n2 (inclusive) A Sample input Enter values for nl and n2 (nl<n2): 3 9 Output: Thé Sum of prime numbers between 3 and 9 (inclusive) is 15

Answer 1

#include <iostream>
using namespace std;
int prime(int n1,int n2);
int main()
{
int n1, n2;
//For User input   
cout << "Enter Value for n1 and n2 (n1 < n2): ";
cin >> n1 >> n2;
//For Output
cout << "\nThe Sum of prime numbers between "<<n1<<" and "<<n2<<" (inclusive) is "<<prime(n1,n2);
}
//Function to Calculate sum of prime number
int prime(int n1,int n2){
int sum = 0,flag,i;

while (n1 < n2)
{
flag = 0;

//To Check Number is prime or Not
for(i = 2; i <= n1/2; ++i)
{
if(n1 % i == 0)
{
flag = 1;
break;
}
}
//To Calculate Sum of prime Number
if (flag == 0){
sum = sum + n1;
}
++n1;
}
//Return Sum of prime number
return sum;
}

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