confusion with loop

[w1llux]

I am new to programming and am trying to write a simple program that calculates the number of days it takes for a salary to earn 100,000 dollars. The pay rate doubles each day and is 0.01 the first day and 0.02 the second, and 0.04 the next..and so on. I was able to get the loop to 100,000, but i do not know how to keep up with how many times it took to reach >= 100000. any help would be great!

[squatch]

This is pretty easy solution. You've already done all of the hard work. You just need to declare a counter variable. You'll want to initialize this to 0, and place at the end of your loop. You could do something such as...

counter = counter + 1;

//or

counter++;

Every pass through the loop will increment the value of counter by 1 every time. When you've reached your desired amount, you can then create an output using this variable.

UAT Student

[mainframe639]

I'm not so sure on the algorithm of your program but I tried it anyway.

#include <iostream>
using namespace std;
int main()
{
    double r=0.01,total,salary,x,y=0;

    cout<< "Enter the salary: \n";
    cin>> salary;
    total = 0;
    for (x=1;total<100000;x++)
    {
        r=r*2;
        total= total + (salary * r);
        y++;
    }

    cout<< "Total salary = "<<total <<endl;
    cout<< "Days: "<<y<<endl;
    return 0;
}