Question

I need help with this C++ assignment.

Create a program which will implement the sum of the numbers between 1 and n where n is an integer. When completed, the program will allow the user to input a positive integer (n) then the program will add all numbers between 1 and n (including n) and output the sum. For example, if the user enters 8 then the program will sum the numbers 1 through 8 and will output the sum.

Test your program with the following inputs:

a. 8 (sum is 36)

b. 75 (sum is 2850)

c. 100 (sum is 5050)

Answer 1

#include <iostream>

using namespace std;

int main() {
    int n, total = 0;
    cout << "Enter a positive integer: ";
    cin >> n;
    for (int i = 1; i <= n; ++i) {
        total += i;
    }
    cout << total << endl;
    return 0;
}