Header file C++

Question

when i'm trying to compile program but it says that i have an error in row when i'm to create a function pow(int base ,int exp),it says that 'pow': illegal qualified name in member declaration,here's my code:

Math.h:

#pragma once
static class Math {
public:
    static int Math::pow(int base,int exp);
};

Math.cpp:

#include "Math.h"
int Math::pow(int base, int exp)
{
    int result = 1;
    for (int i = 0; i < exp; i++)
    {
        result = result * base;
    }
    return result;
}

Answer 1

Line:

static int Math::pow(int base,int exp);

Does not need the Math:: prefix since it is in the Math class declaration.

Answer 2

The class definition is probably intended to look like this:

class Math {
public:
    static int pow(int base,int exp);
};

static before the class has no meaning and is not allowed syntax.

The member function declaration doesn't need (and isn't allowed to) have a qualified name. It belongs to the class already because it is declared in the class scope. There is no need to qualify it any further.

---

From what you are doing it does seem however that you really want to have a namespace, not a class:

// Header file
namespace Math {
    int pow(int base,int exp);
}

// Source file
namespace Math {
    int pow(int base, int exp)
    {
        int result = 1;
        for (int i = 0; i < exp; i++)
        {
             result = result * base;
        }
        return result;
    }
}