Example of a basic function in c

function_example.c

#include <stdio.h>

// add_two_numbers takes 2 arguments, which are 2 numbers, adds them up and returns the result.
int add_two_numbers(x, y)
{
    return x + y;
}

int main(void)
{
    int sum;
    
    sum = add_two_numbers(40, 2); // storing the returned result into the sum variable
    
    // using printf which is also a function, 
    // to display the statment in the terminal window
    printf("40 plus 2 is %d\n", sum); 
}