studentFunction.c

#include "studentFunction.h"

void startMenu(){
    printf("1. Login\n");
    printf("2. Create account\n");
    printf("0. Exit\n\n");
}

void createUser(struct User* userData){
    printf("\n");
    printf("New Username: ");
    scanf("%s", userData->username);

    printf("New password: ");
    scanf("%s", userData->password);

    printf("\nYour username is: %s \nYour password is: %s \n\n", userData->username, userData->password);

    printf("Your account has been created, welcome!\n");
}

int login(struct User* userData, int amountOfUsers){
    char username[80];
    char password[80];
    int loginLoop = 1;
    int check = 0;
    int position;

    for(int i = 0; i < amountOfUsers; i++){
        printf("%s\n%s\n", userData[i].username, userData[i].password);
    }

        do{
            printf("Username: ");
            scanf("%s", username);

            printf("Password: ");
            scanf("%s", password);

            for(int i = 0; i < amountOfUsers; i++){

                if(strcmp(username, userData[i].username) == 0 && strcmp(password, userData[i].password) == 0){
                        loginLoop = 1;
                        check = 1;
                        position = i;
                        i = amountOfUsers;
                        printf("\nLogin: Success\n");
                }

                else{
                    printf("Login failed, try again!\n\n");
                }

            }




        }while(loginLoop == 0);

    return position;
}

void mainMenu(struct User* userData, int userID, int amountOfUsers){

    char sentence[1000];
    char newFileName[1000];
    char fileContext[1000];


    int loop = 1;
    int option;
    char inputChar;
    char ReadFileName[80];

    char newPassword[80];

    struct User pUser;




    do{
        printf("\nMENU\n");
        printf("---------------\n");
        printf("1. Input text\n");
        printf("2. Save inputed text to a new file\n");
        printf("3. Add inputed text to an already existing file\n");
        printf("4. Read from file and present the context of the file\n");
        printf("5. Change password\n");
        printf("6. Logout\n");
        printf("7. Exit Program\n\n");

        printf("Choose option (1 to 7): ");
        scanf("%d", &option);
        getchar();

        FILE *pFileText;
        pFileText= fopen("text.txt", "a");

        switch (option){
            case 1:

                if(pFileText == NULL){
                    printf("error opening file");
                }

                printf("Enter text: ");
                fgets(sentence, 1000, stdin);

                printf("\n%s\n", sentence); //remove later

                printf("Would you like to save in existing file? (y/n): ");
                scanf("%c", &inputChar);

                if(inputChar == 'y'){
                    fputs(sentence, pFileText);
                    fclose(pFileText);
                }

            break;

            case 2:
                printf("\n%s\n", sentence); // remove later on

                printf("Name for new file: ");
                scanf("%s", newFileName);
                FILE * pNewFile;
                pNewFile = fopen(newFileName, "w");

                if(!pNewFile){
                        perror("Could not find file!");
                }

                fputs(sentence, pNewFile);
                fclose(pNewFile);
            break;

            case 3:
                printf("Name of already existing file: ");
                scanf("%s", pUser.fileName);
                getchar();


                FILE * pExistingFile;
                pExistingFile = fopen(pUser.fileName, "a+");

                if(!pExistingFile){
                        perror("Could not find file!");
                }
                else{
                    fputs(sentence, pExistingFile);
                    fclose(pExistingFile);
                    printf("\nSuccess! Text inputed in to existing file\n");
                }

            break;

            case 4:
                printf("Name of the file which you would like its content?: ");
                scanf("%s", ReadFileName);

                FILE * readFile;
                readFile = fopen(ReadFileName, "r");

                if(!readFile){
                        perror("Could not find file!");
                }

                printf("\n\n");

                while(fgets(fileContext,sizeof(fileContext),readFile) != NULL){
                    fputs(fileContext,stdout);
                }

                printf("\n");
                fclose(readFile);
            break;

            case 5:
                printf("Write your new password: ");
                scanf("%s", newPassword);

                printf("Hello");
                printf("%s", userData[userID].password);

                strcpy(userData[userID].password, newPassword);



                printf("%s", userData[userID].password);



                FILE* outFile;
                outFile = fopen("User.txt", "r+");

                fseek(outFile, 3, SEEK_SET);

                for (int i = 0; i < amountOfUsers; i++){
                        fprintf(outFile, "%s\t%s\n", userData[i].username, userData[i].password);
                }

                fclose(outFile);

            break;

            case 6:
                printf("Logout");
            break;

            case 7:
                printf("Bye!");
                exit(0);
            break;

            default:
                printf("input error");
            break;
        }
    }while(loop != 0);
}