Overloading a Function Template Provides Even Greater Flexibility - C++ template

C++ examples for template:template function

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Description

Overloading a Function Template Provides Even Greater Flexibility

Demo Code

#include <iostream>

using namespace std;

template <typename T> T AbsoluteValue(T x)
{
    cout << "(using first)" << endl;
    if (x >= 0)
        return x;
    else//w w  w  . jav a 2s  .co m
        return -x;
}

template <typename T> T AbsoluteValue(T *x)
{
    cout << "(using second)" << endl;
    if (*x >= 0)
        return *x;
    else
        return -(*x);
}

int main()
{
    int n = -3;
    cout << AbsoluteValue<int>(n) << endl;

    float *xptr = new float(-4.5);
    cout << AbsoluteValue<float>(xptr) << endl;
    cout << AbsoluteValue<float>(10.5) << endl;

    return 0;
}

Result


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