initialProj

//GROUP 1 INITIAL PROJECT
#include <stdio.h>
#include <conio.h>
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
#include <stdbool.h>
#include <time.h>

void login();
void mainMenu();
void encryptText();
void decryptText();
void passwordChecker();
void passwordGenerator();
int main(){
    login();
    return 0;
}
void login(){
    system("cls");
    char originalUsername[50] = "Qovthy";
    char originalPassword[50] = "iluqv";
    char userName[50];
    char password[50];

    int usernameResult,passwordResult;

    printf("\n\tLogin System\n");
    fflush(stdin);
    printf("\tEnter Username: ");
    scanf("%[^\n]s", &userName);
    fflush(stdin);
    printf("\tEnter Password: ");
    scanf("%[^\n]s", &password);

    for(int i = 0;i < strlen(originalUsername); i++){
        originalUsername[i] = originalUsername[i] - 7;
    }
    for(int i = 0;i < strlen(originalPassword); i++){
        originalPassword[i] = originalPassword[i] - 8;
    }
    usernameResult = strcmp(userName, originalUsername);
    passwordResult = strcmp(password, originalPassword);

    if (usernameResult==0){
        if (passwordResult==0){
            printf("\n\tLogged in, press any key to continue...");
            getch();;
            mainMenu();
        } else {
            printf("\n\tInvalid Password, press any key to try again...");
            getch();
            login();
        }
    } else {
        if (passwordResult==0){
            printf("\n\tInvalid Username, press any key to try again...");
        } else {
            printf("\n\tInvalid Username and Password, press any key to try again...");
        }
        getch();
        login();
    }
}
void encryptText(char text[100], int password){
    int choice;
    for(int i = 0;i < strlen(text); i++){
        text[i] = text[i] + password;
    }
    printf("\n\tEncrypted string: %s\n", text);
    printf("\n\tPress any key to go back in Main menu...");
    getch();
    mainMenu();
}
void decryptText(char text[100], int password){
    int choice;
    for(int i = 0;i < strlen(text); i++){
        text[i] = text[i] - password;
    }
    printf("\n\tDecrypted string: %s\n", text);
    printf("\n\tPress any key to go back in Main menu...");
    getch();
    mainMenu();
}
void passwordGenerator(){
    int ch;
    srand (time (NULL));
    char alp[]  = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz";
    char num[] = "0123456789";
    char sym[] = "`~!@#$%^&*()_-+={}[]\\|:;\"'<>,.?/";
    char password[50];
    int x = 0, y = 0, z = 0;

    printf ("\n\tYour Password: ");

    for (int i = 0; i < 3; i++){
        x = (rand () % 51) + 1;
        y = (rand () % 9) + 1;
        z = (rand () % 31) + 1;
        printf ("%c%c%c", alp[x], num[y], sym[z]);
    }
    printf("\n\tPress any key to go back in Main menu...");
    getch();
    mainMenu();
}
void passwordChecker(){
    char string1[100];
    char vw[25] = "Very Weak";
    char w[25] = "Weak";
    char s[25] = "Strong";
    printf("\n\tEnter Password to check: ");
    scanf("%[^\n]s", &string1);

    bool hasUpper = false;
    bool hasLower = false;
    bool hasDigit = false;

    for(int i =0; i < strlen(string1); ++i){
        if( islower(string1[i]) ){
            hasLower = true;
        }
        if( isupper(string1[i]) ){
            hasUpper = true;
        }
        if( isdigit(string1[i]) ){

            hasDigit = true;
        }
    }
    if (strlen(string1) > 8) {
        if(hasLower && hasUpper && hasDigit){
            printf("\n\tPassword classification: %s Password", s);
            printf("\n\tIt contains combination of lowercase, uppercase, and number\n");
            printf("\n\tPress any key to go back in Main menu...");
            getch();
            mainMenu();
        } else if (hasLower && hasUpper) {
            printf("\n\tPassword classification: %s Password", w);
            printf("\n\tPlease add numbers\n");
            printf("\n\tPress any key to go back in Main menu...");
            getch();
            mainMenu();
        } else if (hasLower && hasDigit) {
            printf("\n\tPassword classification: %s Password", w);
            printf("\n\tPlease add uppercase\n");
            printf("\n\tPress any key to go back in Main menu...");
            getch();
            mainMenu();
        } else if (hasUpper && hasDigit) {
            printf("\n\tPassword classification: %s Password", w);
            printf("\n\tPlease add uppercase\n");
            printf("\n\tPress any key to go back in Main menu...");
            getch();
            mainMenu();
        } else if (hasLower) {
            printf("\n\tPassword classification: %s Password", vw);
            printf("\n\tPlease add uppercase, and number\n");
            printf("\n\tPress any key to go back in Main menu...");
            getch();
            mainMenu();
        } else if (hasUpper) {
            printf("\n\tPassword classification: %s Password", vw);
            printf("\n\tPlease add lowercase, and number\n");
            printf("\n\tPress any key to go back in Main menu...");
            getch();
            mainMenu();
        } else if (hasDigit) {
            printf("\n\tPassword classification: %s Password", vw);
            printf("\n\tPlease add lowercase, and uppercase\n");
            printf("\n\tPress any key to go back in Main menu...");
            getch();
            mainMenu();
        }
    } else {
        printf("\n\tYour password is not safe it must be 8 or more characters\n");
        printf("\n\tPress any key to go back in Main menu...");
        getch();
        mainMenu();
    }
}
void mainMenu(){
    system("cls");
    int option;
    char text[100];
    int password;

    printf("\n\tMain menu:\n");
    printf("\t[1]. Encrypt the string.\n");
    printf("\t[2]. Decrypt the string.\n");
    printf("\t[3]. Password generator.\n");
    printf("\t[4]. Password checker.\n");
    printf("\tEnter option: ");
    scanf("%d", &option);

    switch(option){
    case 1:
        fflush(stdin);
        printf("\n\tPlease enter a string:\t");
        gets(text);
        printf("\tEnter password (ex. 123):");
        scanf("%d", &password);
        encryptText(text, password);
        break;
    case 2:
        fflush(stdin);
        printf("\n\tPlease enter a string:\t");
        gets(text);
        printf("\tEnter password (ex. 123):");
        scanf("%d", &password);
        decryptText(text, password);
        break;
    case 3:
        fflush(stdin);
        passwordGenerator();
        break;
    case 4:
        fflush(stdin);
        passwordChecker();
        break;
    default:
        printf("\nError\n");
    }
}