// header files
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>

// constants

/*
Name: add_two_nums
Process: adds two numbers together given user input
Function input/parameters: NONE
Function output/parameters: NONE
Function output/returned: NONE
Device input/---: NONE
Device output/---: NONE
Dependencies: included by standard libraries
*/
int add_two_nums()
{
    // define variables
    int first_num, second_num, total;
    // get user input
    printf("---Adding two numbers---\nPlease enter two numbers(space in between): ");
    scanf("%d %d", &first_num, &second_num);
    // do calculations
    total = first_num + second_num;
    // display results
    printf("\n%d + %d = %d!", first_num, second_num, total);
    // return success
    return 0;
}

/*
Name: add_two_nums_parameterized
Process: adds two numbers together given user input as parameters
Function input/parameters: 
Function output/parameters: NONE
Function output/returned: NONE
Device input/---: NONE
Device output/---: NONE
Dependencies: included by standard libraries
*/
int add_two_nums_parameterized(int first_num, int second_num)
{
    // define variables
    int total;
    // get user input
    printf("---Adding two numbers PARAMETERIZED!---\n");
    // do calculations
    total = first_num + second_num;
    // display results
    printf("\n%d + %d = %d!", first_num, second_num, total);
    // return total
    return total;
}

/*
Name: main
Process: Runs all the functions listed above that was used as preparation for 
                                CS480. Videos were used as the similar practice.
Function input/parameters: NONE
Function output/parameters: NONE
Function output/returned: NONE
Device input/---: NONE
Device output/---: NONE
Dependencies: included by standard libraries
*/
int main()
{
    // define/initialize variables
    int tnNum1, tnNum2, tnSum;
    // get user input
    printf("Please input numbers for the parameterized version of adding two numbers.\n");
    scanf("%d", &tnNum1);
    scanf("%d", &tnNum2);
    // do calculations
    add_two_nums();
    tnSum = add_two_nums_parameterized(tnNum1, tnNum2);
    // display results
    // return success
    return 0;
}