// Demonstrating the use of a while loop with a sentinel
// condition.
// Week 2, Lecture 3

// Problem: I want to read in some numbers until a 
// negative number has been 
// entered, and sum up all the positive numbers. 
// Let's think through the steps to solve this!
/*
1. Keep scanning in numbers
 - scan in a number 
2. Check if that number is negative
- if negative - I would stop scanning
- else I would keep scanning and add it to the total

*/

#include <stdio.h>

int main (void){

    int number = 1;
    int sum = 0;

    while (number > 0) {
        scanf("%d", &number);
        //if (number > 0) {
        sum = sum + number;
        //}
    }
    
    printf("Sum = %d\n", sum);
    return 0;
}