iPow function does not execute

[Hardisius]

Hello I need help my iPow function does not seem to calculate the inputs.
The program is just a simple program to calculate x^n . However I need to use a function.The output it generates now is exactly the same as the integer.

  #include <iostream>
using namespace std;

float x, answer;
int i, n;

float iPow()
{
    answer =1;
    for( i=1; i <=n ; i++)
    {
        answer *= x;
        return answer ;
    }
}

int main()
{
    cout << " Enter a number and a non-negative integer " << endl;
    cin >> x >> n;
    cout << x << " to the power " << n << " is " << endl;
    cout << iPow() << endl;

    return 0;

}

[tallyman]

You have to move the return outside of the loop. Currently, it will only go through one iteration before leaving the function.

[mutexe]

firstly you should be passing parameters into your function, and not use global variables.
See
http://www.cplusplus.com/doc/tutorial/functions/

the main reason it's not working though is this:

    for( i=1; i <=n ; i++)
    {
        answer *= x;
        return answer ;
    }

Because you call return inside your for loop, you are not actually allowing your for loop to loop! It exits immediately.


So roughly you'd want something like this:
1. delete your nasty globals from lines 4 and 5.
2. do this:

float iPow(float x, int n)
{
    int answer =1;
    for(int i=1; i <=n ; i++)
    {
        answer *= x;
        
    }
    return answer ; // <-- allow your for loop to do it's thing.
}

3. call like this:
cout << iPow(x,n) << endl;


something like that.

[Hardisius]

Thanks guys appreciated.

It works fine now.