Codes

C++

GNU C++

Installation

Ubuntu

apt install g++

AlmaLinux

dnf install gcc-c++

Examples

Fibonacci Numbers

// fibonacci Numbers

#include <iostream>
#include <cstdlib>

using namespace std;

int fib(int n)
{
    if (n < 2) {
        return n;
    } else {
        return fib(n - 1) + fib(n - 2);
    }
}

int main(int argc, char** argv)
{
    int n;
    n = atoi(argv[1]);
    cout << fib(n) << endl;

    return 0;
}

/*
example
    compile:
        g++ -o fib_cpp -O3 -mtune=native fibonacci.cpp
    run:
        ./fib_cpp 39
*/