CODEWITHSUNDEEP
c++templates
Shinji-san
Shinji-san

Reputation: 1001

C++ Template compilation error

I am new to templates and I am trying to test this out after reading up on how to do templates, but I'm getting a compilation error and my code looks the exact same as the example I took from. I create a function and I have a template, but when I compile it I get the following error:

15 20 C:\Users\Fire\Desktop\test.cpp [Error] call of overloaded 'max(int, int)' is ambiguous

15 20 C:\Users\Fire\Desktop\test.cpp [Note] candidates are:

7 3 C:\Users\Fire\Desktop\test.cpp [Note] T max(T, T) [with T = int]

The code is as follows:

#include <iostream>
using namespace std;

template<typename T>
T max(T a, T b){
    return (a > b)? a: b;
}    

int main(){
    cout << max<int>(10, 40);
    return 0;
}

Upvotes: 1

Views: 678

Answers (2)

Fantastic Mr Fox
Fantastic Mr Fox

Reputation: 33944

std::max is part of the std namespace. You are doing using namespace std and resolving all functions without the std qualifier. This means you have 2 versions of max in your code. Yours and namespace std. To solve this, never do using namespace std.

Upvotes: 4

Mitch
Mitch

Reputation: 3416

std::max is a function defined in C++. Call your function myMax or something like that and it should work

Upvotes: 1

Related Questions