Sum Function

[mattswk]

Hello, I am having trouble with a function I am trying to make. The function is supposed to sum numbers from 2 to 4 numbers used. For some reason I am getting 1 outputted. I tried return num1+num2+num3+num4 , but then I got an error saying named return values no longer supported. So I'm no really sure why that was a problem. Returning result has no errors other than the fact that it doesn't do what it is supposed to haha.

#include <iostream>

int sum(const int num1, const int num2, const int num3=0, const int num4=0){
    int result = num1+num2+num3+num4;
    return result;
}
int main(){
    sum(4,5,2,3);
    std:: cout<< sum;
    return 0;
}

[keskiverto]

Function call on line 8 returns a value, but you don't store it.

Line 9 attempts to print something, possibly the address of the function.


See: http://www.cplusplus.com/doc/tutorial/functions/

[mattswk]

Ok thanks. Would you happen to know anything about the "return value no longer supported value" error (slightly different code)?

[cire]

Would you happen to know anything about the "return value no longer supported value" error (slightly different code)?

You had a misplaced opening brace that triggered the error message.

http://ideone.com/Zlc20n

[keskiverto]

Websearch is your friend.

It does appear that GCC 2.96 had a non-standard syntax for optimization. The feature was short-lived. If you attempt to use that syntax with more recent GCC, you will get this error. If you write code that GCC mistakes as this syntax, you get the error too.