Пользователь не может войти в систему после создания учетной записи

Question

Я стараюсь работать над простым приложением самостоятельно на C. Это облегчает кому-либо создание учетной записи его и ее личной информации, и это безопасно. До сих пор пользователь может сделать отчет о его/ее, когда пользователь возвращается при регистрации, он не может. Я написал и использовал файл ввода/вывода для сохранения учетных данных пользователя.

#include <stdio.h> 
#include <string.h> 
#include "cs50.h" 

int main (int argc, string argv[]) 
{ 
    // The pointer to the File 
    FILE* accountsDatabase = fopen("accountsDatabase.txt", "r+"); 

    char Fdecision; 
    char Gateway = 'Y'; 
    char Gatewaydenied = 'N'; 

    string stringGateway = "Yes"; 
    string stringGatewayDenied = "No"; 
    string information; 
    string Newusername; 
    string Newpassword; 
    string Universalpassword; 
    string Universalusername; 

    printf("\n \t \n"); 

    printf("\tThis is Dell login interference....."); 
    printf("\n"); 
    printf("\t#################################\n"); 
    printf("\t#################################\n"); 

    printf("\n"); 
    printf("\n"); 

    printf(" Please inset your id and password in below user friendly interface."); 
    printf("\n"); 
    printf("\n"); 

    printf("Please type answer in Y and N"); 
    printf("\n"); 
    printf("Do you want the Dell's login user interfae: "); 
    Fdecision = GetChar(); 

    if (Fdecision == Gateway) 
    { 
     printf("Do you want to create a new user. Answer in Yes or NO: "); 
     string userChoice = GetString(); 
     printf("\n"); 
     if (strcmp(stringGateway, userChoice) == 0) 
     { 
      printf("To create a New User Account.... Fill following boxes..\n"); 
      printf("\n"); 
      printf("username: "); 
      Newusername = GetString(); 
      printf("password: "); 
      Newpassword = GetString(); 
      printf("\n"); 
      printf("Your personal textBook..:: "); 
      information = GetString(); 
      printf("\n"); 
      // Checks if it is opened.. 
      if (accountsDatabase == NULL) 
      { 
       printf("Error opening file:\n"); 
      } 
      else 
      { 
       fputs(Newusername, accountsDatabase); 
       fputs(Newpassword, accountsDatabase); 
      } 
      printf("Do you want to login.? Answer in Yes or No: "); 
      string LoginDecision = GetString(); 
      if(strcmp(stringGateway, LoginDecision) == 0) 
      { 
       printf("Username: "); 
       string username = GetString(); 
       printf("\n"); 
       if (strcmp(Newusername, username) == 0) 
       { 
        printf("Password: "); 
        string password = GetString(); 
        if (strcmp(Newpassword, Newpassword) == 0) 
        { 
         printf("\n"); 
         printf("Confirming Identity.....\n"); 
         printf("Identity Confirmed.....\n"); 
         printf("\n"); 
         printf("Do you want to reveal your sensitive information: "); 
         string secondDecision = GetString(); 
         if (strcmp (stringGateway, secondDecision) == 0) 
         { 
          printf("\n"); 
          printf("Enter password:: "); 
          string Currentpassword = GetString(); 
          if (strcmp (Newpassword, Currentpassword) == 0) 
          { 
           printf("\n"); 
           printf("%s\n", information); 
           printf("\n\n"); 
          } 
         } 
        } 
       } 
      } 
     } 
     else if (strcmp(stringGatewayDenied, userChoice) == 0) 
     { 
      printf("\n"); 
      printf("Username: "); 
      string username = GetString(); 
      printf("\n"); 


      // Checks if it is opened.. 
      if (accountsDatabase == NULL) 
      { 

       printf("Error opening file:\n"); 
      } 
      else 
      { 
       fgets(Universalusername, "%s", accountsDatabase); 


       if (strcmp(Universalusername, username) == 0) 
       { 
        printf("Password: "); 
        string password = GetString(); 

        if (strcmp(Universalpassword, password) == 0) 
        { 
         printf("\n"); 
         printf("Confirming Identity.....\n"); 
         printf("Identity Confirmed.....\n"); 
         printf("\n"); 
         printf("Do you want to reveal your sensitive information: "); 
         string secondDecision = GetString(); 
         if (strcmp (stringGateway, secondDecision) == 0) 
         { 
          printf("\n"); 
          printf("Enter password:: "); 
          string Currentpassword = GetString(); 
          if (strcmp (Universalpassword, Currentpassword) == 0) 
          { 
           printf("\n"); 
           printf("%s\n", information); 
           printf("\n\n"); 
          } 
         } 

        } 
       } 
      } 
      printf("Universalusername : %s", Universalusername); 
     } 
     else 
     { 
      printf("Take these security measures...\n"); 
      printf("##############################"); 
      printf("\n"); 
      printf(" 1) You need specil previlage to access sensitive information...\n"); 
      printf(" 2) Please run in a minute either alarm will be trigered..\n"); 
      printf(" 3) Security camera are availabel, \n 4) run now.\n"); 
     } 

    } 
    else if (Fdecision == Gatewaydenied) 
    { 
     printf("\n"); 
     printf("You can get off from front door.\n"); 
     printf("Don't LOok Back, it's not safe..\n'"); 
     printf("What do you think? Can you cheat me? \n"); 
     printf("No, you cannot!"); 
    } 

    else 
    { 
     printf("\n"); 
     printf("Please choose between Yes (Y) or No (N)\n"); 
     printf("Not the full spelling but ony a single abbreviated letter..\n"); 
     printf("Y or N..\n"); 
    } 

    fclose(accountsDatabase); 
} 

Answer 1

Ваш код не так ясен и не прост в чтении. чтобы помочь вам, я написал этот фрагмент кода, который вы можете использовать его в своей повседневной практике, и это может сделать вашу жизнь проще. желание это может помочь.

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



input(char *prompt,char *buff); 
int YesNoQuetion(char *prompt); 

int main (void) 
{ 
    char firstname[50]; 
    char lastname[50]; 
    printf("This is a little code that will help you create a clean code\n\n"); 
    printf("Please enter your first and last name\n"); 

    input("First name",firstname); 
    input("Last name",lastname); 

    if (YesNoQuetion("Do you realy want to know?")) 
    { 
     printf("\nThat's good '%s, %s', you just pressed Yes\n",firstname,lastname); 
    } 
    else{ 
     printf("\nYou answerd No, that is also good\n");; 
    } 

    return 0; 
} 

/*__________________________________________________________________________________ 
*/ 
int YesNoQuetion(char *prompt){ 
    int r=0,c; 
    printf("%s (Y/N) : ",prompt); 
    while(1){ 
     c=_getch(); 
     if(c=='n' || c=='N' || c=='y' || c=='Y'){ 
      printf("%c\x8",c); 
      r=c; 
     }else{ 
      if((c=='\n'||c=='\r') && r) 
       break; 
      r=0; 
      printf("%d\x8\x7",c); 
     } 
    } 
    printf("%s\n",(r=='y'|| r=='Y')?"Yes":"No"); 
    return (r=='y'|| r=='Y'); 

} 
    /*__________________________________________________________________________________ 
*/ 
int input(char *prompt,char *buff){ 
    printf("%s :\t",prompt); 
    return scanf("%s",buff); 
} 

/*__________________________________________________________________________________ 
*/