C++ Macro for Sorting Three Integers: A Simple Solution

Here's a C++ macro example to sort three integers:

#include<iostream>

#define SORT_THREE(a, b, c) \
    do { \
        if (a > b) { \
            std::swap(a, b); \
        } \
        if (a > c) { \
            std::swap(a, c); \
        } \
        if (b > c) { \
            std::swap(b, c); \
        } \
    } while(0)

int main() {
    int x = 3, y = 1, z = 2;
    std::cout << "Before Sorting: " << x << " " << y << " " << z << std::endl;
    
    SORT_THREE(x, y, z);
    
    std::cout << "After Sorting: " << x << " " << y << " " << z << std::endl;
    
    return 0;
}

In this example, the SORT_THREE macro accepts three integer arguments (a, b, and c) and sorts them in ascending order. It leverages the std::swap function for value swapping when needed. The macro is enclosed in a do-while loop, ensuring it acts like a single statement.