Question

This doesn’t work. Can anyone tell why?

#include <iostream>

using namespace std;

int mean( int );

int main() {

    int array[] = {43, 5, 3, 5, 2};

    cout << mean(array);

}

int mean( int list[] ) {
    return list[0];
}

These are the errors I’m getting:

Invalid conversion from 'int*' to 'int'
Initializing argument 1 of 'int mean(int)'

Answer 1

You are forward declaring the mean function using a different signature. Fix your forward declaration:

int mean( int[] );