Example of overloaded function in C++

overloaded_function.cpp

#include <iostream>
using namespace std;

void custom_add(int a, int b) {
    cout << "Int result = " << (a + b) << endl;
}

void custom_add(int a, int b, int c) {
    cout << "Triple int result = "  << (a + b + c) << endl;
}

void custom_add(float a, float b) {
    cout << "Float result = " << (a + b) << endl;
}

int main() {
    int   c = 1;
    int   e = 2;
    int   d = 3;
    float a = 10.1;
    float r = 11.2;

    custom_add(c, e);      // by input type & count
    custom_add(c, e, d);   // by input type & count
    custom_add(a, r);      // by input type
    // custom_add(c, r);   // call of overloaded function is ambiguous
    return 0;
}