/*
 * debug_demo.c
 *
 *  Created on: Jan 24, 2021
 *      Author: johnsontimoj
 */

#include <stdio.h>

void splash(void);
void read_input(int* intval_ptr, float* floatval_ptr, char* charval_ptr);
int ifelsefn(int val);
int casefn(int* intval_ptr, float* floatval_ptr);

int main(void){
	setbuf(stdout, NULL);

    int x;
    int y;
    char aa;
    char bb;
    float one;
    float two;

    x = 3;
    y = 4;
    aa = 'f';
    bb = 'g';
    one = 1.003;
    two = 2.222;

    printf("%i %i\n", x, y);

    // splash screen
    splash();

    // input values
    read_input(&x, &one, &aa);

    // ifelse function
    y = ifelsefn(x);

    // case function
    y = casefn(&x, &two);

    // port manipulation
    printf("%i %i\n", x, y);
    printf("%f %f\n", one, two);
    printf("%c %c\n", aa, bb);

    return 0;
}// end main

////////////////////////
// splash
//
// code to print splash screen
//
// input: none
// output - prints message to screen
// retrun - viod
/////////////////////////
void splash(void){
    printf("\nProgram to demonstrate the debugger\n\n");

    return;
}// end splash

////////////////////////
// read_input
//
// read in an int, a float, and a char
//
// inputs - none
// output - int/float/char via pointers
// return - void
////////////////////////////
void read_input(int* intval_ptr, float* floatval_ptr, char* charval_ptr){
    printf("Please enter an int, a float, and a character: \n");
    scanf("%i %f %c", intval_ptr, floatval_ptr, charval_ptr);

    return;
}// end read_input

//////////////////////////////
// ifelsefn
//
// selects an output for a given input
//
// inputs - int to select on
// output - none
// return - random value based on input
////////////////////////
int ifelsefn(int val){
    int result;
    if(val == 0)
        result = 5;
    else if(val == 4)
        result = 9;
    else if(val >=5)
        result = 12;
    else
        result = -2;

    return result;
}// end ifelsefn

//////////////////////////////
// casefn
//
// selects an output for a given input
//
// input - pointer to value to change (and switch on), and float to multiply by
// output - modifies the pointer value
// return - original value input
//////////////////////////////
int casefn(int* intval_ptr, float* floatval_ptr){
    int inputval;
    int tmpval;
    inputval = *intval_ptr;
    tmpval = ifelsefn(*intval_ptr);
    switch(tmpval){
    case 5:
        *intval_ptr = 6;
        *floatval_ptr *= 6;
        break;
    case 9:
        *intval_ptr = 10;
        *floatval_ptr *=10;
        break;
    default:
        *intval_ptr = 0;
        *floatval_ptr = 0;
        break;
    }// end switch

    return inputval;
}// end casefn