#define _CRT_SECURE_NO_WARNINGS

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

#define INPUT_FILE "large.txt"

/* The maximum name length and number of people and movies */
#define MAX_NAME_LENGTH 200
#define MAX_PEOPLE 700
#define MAX_MOVIES 200



/* The only global variables permitted in this project are below */
char movies[MAX_MOVIES][MAX_NAME_LENGTH] = {0};
char people[MAX_PEOPLE][MAX_NAME_LENGTH] = {0};
int ratings[MAX_PEOPLE][MAX_MOVIES] = {0};
int numberOfMovies = 0;
int numberOfPeople = 0;

//main function
int main(void) {

    //declaring variables and variable types
    char movie[MAX_NAME_LENGTH], person[MAX_NAME_LENGTH];
    int rating,  duplicate, i, stringSame;
    int IdSetPep=0;
    int iDSetMov=0;

    //the following code is for opening the input file for reading   **********************///

    FILE *fp; //identifying pointer fp, this will be where the input file is origonally stored

    fp= fopen("input.txt", "r"); //opening the input file
    if (fp == NULL) { //if statement, when true will tell the user there is an error opening the file
        printf("there is an error opening."); //tells the user there is an error
        exit(EXIT_FAILURE);

        }

//the following code is used to set the input txt file into arrays*************************************////

//fscanf function is used to scan through the input file, it will set 'person' and 'movie' as strings and 'rating' will be an integer value
    while (fscanf(fp, "%s %s %d", person, movie, &rating) != EOF){ //while loop will continue to scan through the input file until the End Of File is reached


    // setting the variable 'duplicate' to zero. this variable will be used to monitor if a string has appeared before
        duplicate=0;

    //for loop will continue to cycle as long as 'i' is less than the variable 'numberOfPeople'. The variable 'numberOfPeople' is used to as an indicator of how many people have been stored in the new array that is being created.
        for (i=0; i < numberOfPeople; i++){
            stringSame= strcmp(people[i], person); //strcmp function tests the new array people[] in slot 'i' against the newly scanned 'person' string from the input file. If the string has appeared it will store a zero in the variable 'stringSame'
            if (stringSame==0){ // if statement will test if variable stringSame is equal to zero
                IdSetPep=i; // 'IdSetPep' is a variable that acts as an identification for the individual people that are set into the new array 'people'
                duplicate=1;  // sets 'duplicate' to be true
            }
        }
            if  (duplicate!=1) { //if statement will  works when there is no double up with the strings
                strcpy(people[i], person); // strcpy function sets the newly read 'person' string and copys it into the people[i] slot
                IdSetPep =numberOfPeople;
                numberOfPeople++ ; //increments the variable 'numberOfPeople'
            }



        stringSame =1; //resets stringSame to 1
        duplicate=0; //resets duplicate to zero

        for (i=0; i < numberOfMovies; i++){ //for loop will continue to cycle as long as 'i' is less than the variable 'numberOfMovies'. The variable 'numberOfMovies' is used to as an indicator of how many movies have been stored in the new array 'movies' that is being created.
            stringSame=strcmp(movies[i], movie); //strcmp function tests the new array movies[] in slot 'i' against the newly scanned string 'movie' from the input file . If the string has appeared it will store a zero in the variable 'stringSame'
            if (stringSame==0){ // if statement will test if variable stringSame is equal to zero
                iDSetMov=i; //'iDSetMov' is a variable that acts as an identification for the individual movies that are set into the new array 'movies '
                duplicate=1; // sets 'duplicate' to be true
            }
        }

            if (duplicate!=1){ //if statement will  works when there is no double up with the strings
                strcpy(movies[i], movie); // strcpy function sets the newly read 'movie' string and copys it into the movies[i] slot
                iDSetMov=numberOfMovies;
                numberOfMovies++;  //increments the variable 'numberOfMovies'
                }






            ratings[IdSetPep][iDSetMov]=rating; // sets the integer 'rating' values from the txt file into the relevant positions of the new array 'ratings'
    }
    //the following code is used to print out the 'ratings' array*********************************/////
        for (IdSetPep=0; IdSetPep < numberOfPeople; IdSetPep++) { //for loops are used to select and print out every value in the array
            for (iDSetMov=0; iDSetMov < numberOfMovies; iDSetMov++){ //for loops are used to select and print out every value in the array
                printf(" %d", ratings[IdSetPep][iDSetMov]); //printf function used to print outthe ratings values
    }
                printf("\n"); //printf function used to put a space after each value
        }
return 0; // end of function
}