/*

  Description: Write a function that finds and returns through an output parameter the longest common suffix of two words.
*/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>

#define SIZE 15

//NO PARAMETERS
//NO RETURNS
//TELLS USER WHAT THE PROGRAM DOES AND HOW TO USE IT PROPERLY
void userPrompt(void)
{
    printf("You will be prompted to input two words. This program will read both words and output the longest common suffix\n");
    printf("Example: enter words GLOVE and DOVE\n");
    printf("Output: Longest common suffix: OVE\n\n");
}

//TAKES IN THE TWO USER INPUTS AND PASSES A NEW VALUE SUFFIX
//NO RETURNS
//TAKES BOTH INPUTED WORDS FINDS THE COMMON SUFFIX AND PASSES IT BACK TO MAIN
void calculateSuffix(char* Input1, char* Input2, char* suffix)
{
    char word1[SIZE], word2[SIZE];
    int i = 0;

    strcpy(word1, Input1);
    strcpy(word2, Input2);

    i = 0;

    while(strcmp(word1, word2) != 0)
    {
        i++;
        printf("\n%d", i);
    }
    printf("%d", i);
    /*
    strncpy(suffix, word1, i);
    suffix[i] = '\0';
    */

}
//PASSES TWO USER INPUTS TO MAIN
//NO RETURNS
//PROMPTS USER TO INPUT TWO WORDS AND PASS THEM
void userInput(char *Input1, char *Input2, char *suffix)
{
    printf("Enter first word: ");
    fscanf(stdin, "%s", Input1);
    printf("\n%s", Input1);


    printf("Enter second word: ");
    fscanf(stdin, "%s", Input2);
    printf("\n%s", Input2);

    calculateSuffix(Input1, Input2, suffix);

}
//NO PARAMETERS
//NO RETURNS
//CALLS FUNCTIONS AND PRINTS COMMON SUFFIX
int main()
{
    char Input1[SIZE], Input2[SIZE], suffix[SIZE];

    userPrompt();
    userInput(Input1, Input2, suffix);
    //printf("%s %s",Input1, Input2);

//     calculateSuffix(Input1, Input2, &suffix);
    //printf("%s", suffix);

    printf("\n");
    //system("pause");
    return 0;
}