// ascii decrypt.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <stdio.h>
#include <string.h>   //header files needed to compile it
#include <ctype.h>
#include <stdlib.h>

char *process(char *word, char type)
{
        int i;
        char *aux = word;

        switch(type)
        {
                case 'd':  //in the case that we choose to decrypt
                {
                 /* //takes the word (aux) and goes down one letter in the ascii table then in the second letter it goes down two letters in the ascii table and so on... */
                        for(i = 0; aux[i] != ''; ++i)
                                aux[i] -= i;
                } 
                break;

                case 'e': //in the case we choose to encrypt
                {
                 // basicly does the opposite of case 'd'
                        for(i = 0; aux[i] != ''; ++i)
                                aux[i] += i;
                } 
                break;

                default:
                {
                         fprintf(stderr, "nUse decrypt or encrypt...n");   // prints the text on the screen...(uses C (fprintf) not C++[im not sure about that])
                         exit(1); // exits.....duh
                }

        }

        return aux; // returns the word (aux)
}

int main(void)
{
        char opt, word[25+1]; // sets the word limit to be 25 characters long

      
        printf("/t/te - encrypt wordn/t/td - decrypt wordnnttOption:");
        do
        {
                opt = getchar();         // gets the word
        }while(opt != 'd' && opt != 'e');
        scanf("%*[^n]"); scanf("%*c");
        printf("ntWord (MAX 25 chars): "); // says max is 25 chars
        scanf("%s", word);
        opt == 'd' ? printf("tDecrypted word     : %sn", process(word, opt)) :  // prints the decrypted word on the screen
                     printf("tEncrypted word     : %sn", process(word, opt)); //prints the encrypted word on the screen
		system("pause>nul");  // pauses the screen and takes away the "press any key to continue..."
		return 0;  // ends the program by returnin nothing
}