myc.c

与admin注册的简单的咖啡馆系统和用户(学生)登录。 admin有全部纠正增加资金到学生和改变密码。 学生有权利改变他们自己的密码。

#include <stdio.h>
#include <math.h>

void m();
void m1();
void m_1(int matrix, int pass, float duit);
void m_2();
void m_3();
void m_1_1(int matrix, int pass, float duit);
void m_1_2(int matrix, int pass, float duit);
void m_2_1();
void m_2_1_1();
void m_2_1_2();
void m_2_1_3();
void m_2_1_4();
void m_2_1_5();
void notfound();
void deduct(int matrix, int pass, float duit, float sum);

int main(void)
{
    m();
    return 0;
}

void m()
{
    int choice;
    do {
        printf("Welcome To Cafe System V1.0\n");
        printf("Choice Of Menu:\n\n");
        printf("\t1. Login As User\n");
        printf("\t2. Login As Administrator\n");
        printf("\t3. Exit");
        printf("\n\n");
        printf("Choice: ");
        scanf("%d", &choice);
        if (choice<1 || choice >3) printf("\nError! Please select the right menu\n\n");
        } while (choice<1 || choice >3);
        if (choice == 1) { m1(); }
        if (choice == 2) { m_2(); }
        if (choice == 3) { m_3(); }
}
void m1()
{
    int choice,matrix,pass,matrixInput,passInput;
    int i=0;
    int j=999;
    float duit;
    FILE *USER;
    int matrix_[999];
    int pass_[999];
    float duit_[999];
    int cubaan=3;
    if ( ( USER = fopen( "user.txt", "r" ) ) == NULL ) {
       printf( "File could not be opened\n" );
    }
    else {
      printf("Please Insert Your Matrix NO: ");
      scanf("%d", &matrixInput);
      fscanf( USER, "%d%d%f", &matrix, &pass, &duit );
         while ( !feof( USER ) ) { 
		         matrix_[ i ] = matrix;
                 if (matrix == matrixInput) { j=i; }
		         pass_[ i ] = pass;
		         duit_[ i ] = duit;
                 i++;
           fscanf( USER, "%d%d%f", &matrix, &pass, &duit );
      }
      fclose( USER );
   }
   if (j==999) { notfound(); }
   else {
     printf("Id Found. Please Insert Your Password: ");
     do {
         scanf("%d", &passInput);
         if (passInput == pass_[j]) { printf("Access Granted!\n\n"); }
         if (passInput != pass_[j]) { printf("Access Denied\a! Your Password Is Wrong! You have %d try left!\n\nPassword: ", cubaan); cubaan=cubaan-1; }
         if (cubaan < 0) { exit(0); }
        } while (passInput != pass_[j]);
     matrix=matrix_[j];
     pass=pass_[j];
     duit=duit_[j];
     m_1(matrix,pass,duit);
     }
}
        
void notfound() {
     printf("Id Not Found! Please Retry!\n");
     m();
}
void m_1(int matrix, int pass, float duit)
{
    int choice;
    do {
        printf("Username : %d\n", matrix);
        printf("Balance : RM %.2f\n", duit);
        printf("WELCOME TO OUR USER SECTION!\n");
        printf("Choice Of Menu:\n\n");
        printf("\t 1. Change Password\n");
        printf("\t 2. Buy Items\n");
        printf("\t 3. Back\n");
        printf("\t 4. Exit\n");
        printf("\n\n");
        printf("Choice: ");
        scanf("%d", &choice);
        if (choice<1 || choice >4) printf("\nError! Please select the right menu\n\n");
        } while (choice<1 || choice >4);
        if (choice == 1) { m_1_1(matrix,pass,duit); }
        if (choice == 2) { m_1_2(matrix,pass,duit); }
        if (choice == 3) { m1(); }
        if (choice == 4) { exit(0); }
}
void m_2()
{
    int choice;
    int pass;
    int passF;
    int cubaan=3;
    FILE *ADMIN;
    if ( ( ADMIN = fopen( "admin.txt", "r" ) ) == NULL ) {
       printf( "File could not be opened\n" );
    }
    else {
         fscanf( ADMIN, "%d", &passF );
         printf("WELCOME TO OUR ADMINISTRATOR SECTION\n");
         do {
         printf("Please Enter Administrator Password (NUMBER ONLY):\n\n");
         printf("Password: ");
         scanf("%d", &pass);
         if (pass == passF) { printf("Access Granted!\n"); }
         if (pass != passF) { printf("Access Denied\a! Your Password Is Wrong! You have %d try left!\n", cubaan); cubaan=cubaan-1; }
         if (cubaan < 0) { exit(0); }
         } while (pass != passF);
         m_2_1();
         fclose( ADMIN );
    }
}
void m_2_1()
{
    int choice;
    do {
        printf("WELCOME TO OUR ADMINISTRATOR SECTION\n");
        printf("Choice Of Menu:\n\n");
        printf("\t 1. Change Admin Password\n");
        printf("\t 2. Add User\n");
        printf("\t 3. Delete User\n");
        printf("\t 4. Add Funds To User\n");
        printf("\t 5. Display User\n");
        printf("\t 6. Back\n");
        printf("\t 7. Exit\n");
        printf("\n\n");
        printf("Choice: ");
        scanf("%d", &choice);
        if (choice<1 || choice >7) printf("\nError! Please select the right menu\n\n");
        } while (choice<1 || choice >7);
        if (choice == 1) { m_2_1_1(); }
        if (choice == 2) { m_2_1_2(); }
        if (choice == 3) { m_2_1_3(); }
        if (choice == 4) { m_2_1_4(); }
        if (choice == 5) { m_2_1_5(); }
        if (choice == 6) { m(); }
        if (choice == 7) { exit(0); }
}
void m_3()
{
     exit(0);
}
void m_1_1(int matrix, int pass, float duit)
{
     int matrixF,passF,oldpass,newpass1,newpass2,newpass;
     float duitF;
     int i=0;
     int j;
     int k=999;
     FILE *USER;
     int matrix_[999];
     int pass_[999];
     float duit_[999];
     if ( ( USER = fopen( "user.txt", "r" ) ) == NULL ) {
         printf( "File could not be opened\n" );
     }
     else {
          fscanf( USER, "%d%d%f", &matrixF, &passF, &duitF );
          while ( !feof( USER ) ) { 
              if (matrixF == matrix) { k=i; matrix_[i] = matrix; pass_[i] = pass; duit_[i] = duit; }
              else { matrix_[ i ] = matrixF; pass_[ i ] = passF; duit_[ i ] = duitF; }
              i++;
          fscanf( USER, "%d%d%f", &matrixF, &passF, &duitF );
      }
      fclose( USER );
     }
     printf("Please Insert Your Old Password (NUMBER ONLY): ");
     scanf("%d", &oldpass);
     if ( pass != oldpass ) { printf("Error! Wrong Password Specified!\n"); m_1(matrix,pass,duit); }
     do {
         printf("Please Enter Your New Password (NUMBER ONLY): ");
         scanf("%d", &newpass1);
         printf("Please Enter Your New Password Again (NUMBER ONLY): ");
         scanf("%d", &newpass2);
         if (newpass1 != newpass2) { printf("Error! Password Doesnt Matched! Please Retry!\n\n"); }
     } while (newpass1 != newpass2); 
     newpass=newpass1;
     pass_[k]=newpass;
     if ( ( USER = fopen( "user.txt", "w" ) ) == NULL ) {
     printf( "File could not be opened\n" );
     }
     else {
        for(j=0;j<i;j++) {
            fprintf( USER , "%d %d %.2f\n", matrix_[ j ], pass_[ j ], duit_[ j ] );
        }
     }
     fclose( USER );
     printf("New Password = %d\n", newpass);
     printf("Password Change SUCCESSFULLY! PLEASE REMEMBER IT!!\n\n");
     m_1(matrix,pass,duit);
}
void m_1_2(int matrix, int pass, float duit)
{
     int check,quantity,choice;
     float price,sum=0;
     printf("Username : %d\n", matrix);
     printf("Balance : RM %.2f\n\n", duit);
     do {
         printf("Price Per Item : ");
         scanf("%f", &price);
         printf("Quantity : ");
         scanf("%d", &quantity);
         sum=(float)sum+(price*quantity);
         printf("\n\nEnter Value -1 If You Want To Exit Or Others To Continue: ");
         scanf("%d", &check);
     } while (check != -1);
     printf("Total need to pay = RM %.2f\n\n", sum);
     do {
         printf("Are You Sure?\n");
         printf("\t1. Yes\n");
         printf("\t2. No\n");
         printf("Choice : ");
         scanf("%d", &choice);
         if (choice<1 || choice>2) { printf("\nError! Please select the right menu\n\n"); }
     } while (choice<1 || choice>2);
     if (choice == 1) { deduct(matrix,pass,duit,sum); }
     if (choice == 2) { m_1(matrix,pass,duit); }
}
void deduct(int matrix, int pass, float duit,float sum) {
     int matrixF,passF;
     float duitF;
     int i=0;
     int j;
     FILE *USER;
     int matrix_[999];
     int pass_[999];
     float duit_[999];
     if (duit < sum) { printf("\n\nError! Insufficient Funds!\n\n"); m_1(matrix,pass,duit); }
     else {
          duit=(float)duit-sum;
          printf("New Balance : RM %.2f\n", duit);
          if ( ( USER = fopen( "user.txt", "r" ) ) == NULL ) {
              printf( "File could not be opened\n" );
          }
          else {
               fscanf( USER, "%d%d%f", &matrixF, &passF, &duitF );
               while ( !feof( USER ) ) { 
                   if (matrixF == matrix) { matrix_[i] = matrix; pass_[i] = pass; duit_[i] = duit; }
                   else { matrix_[ i ] = matrixF; pass_[ i ] = passF; duit_[ i ] = duitF; }
                   i++;
               fscanf( USER, "%d%d%f", &matrixF, &passF, &duitF );
           }
           fclose( USER );
          }
          if ( ( USER = fopen( "user.txt", "w" ) ) == NULL ) {
          printf( "File could not be opened\n" );
          }
          else {
             for(j=0;j<i;j++) {
                 fprintf( USER , "%d %d %.2f\n", matrix_[ j ], pass_[ j ], duit_[ j ] );
             }
          }
          fclose( USER );
     }
     m_1(matrix,pass,duit);
}
void m_2_1_1()
{
     int pass,oldpass,newpass,newpass1,newpass2;
     FILE *ADMIN;
     if ( ( ADMIN = fopen( "admin.txt", "r" ) ) == NULL ) {
         printf( "File could not be opened\n" );
     }
     else {
         printf("Please Enter Your Old Password: ");
         scanf("%d", &oldpass);
         fscanf( ADMIN , "%d", &pass );
         if (oldpass != pass) { printf("ERROR! Wrong Password Inserted!\n"); m_2_1(); }
         do {
             printf("Please Enter Your New Password (NUMBER ONLY): ");
             scanf("%d", &newpass1);
             printf("Please Enter Your New Password Again (NUMBER ONLY): ");
             scanf("%d", &newpass2);
             if (newpass1 != newpass2) { printf("Error! Password Doesnt Matched! Please Retry!\n\n"); }
         } while (newpass1 != newpass2); 
         newpass=newpass1;
         fclose( ADMIN );
     }
     if ( ( ADMIN = fopen( "admin.txt", "w" ) ) == NULL ) {
         printf( "File could not be opened\n" );
     }
     else {
         fprintf( ADMIN , "%d\n" , newpass );
         fclose( ADMIN );
     }
     m_2_1();
}
void m_2_1_2()
{
     int matrix;
     int pass;
     float duit;
     FILE *USER;
     printf("Please Insert Details Below:\n");
     printf("Matrix No: ");
     scanf("%d", &matrix);
     printf("Password: ");
     scanf("%d", &pass);
     printf("Money: ");
     scanf("%f", &duit);
     if ( ( USER = fopen( "user.txt", "a" ) ) == NULL ) {
         printf( "File could not be opened\n" );
     }
     else {
          fprintf( USER, "%d %d %.2f\n", matrix, pass, duit);
          printf("User Has SUCCESSFULLY ADDED!\n");
     }
     fclose ( USER );
     m_2_1();
}
void m_2_1_3()
{
    printf("\n\nComing Soon!!!\n\n");
    m_2_1();
}
void m_2_1_4()
{
     int matrixF,passF,matrix,pass;
     float duit,duitF,dummy;
     int i=0;
     int j;
     int k=999;
     FILE *USER;
     int matrix_[999];
     int pass_[999];
     float duit_[999];
     printf("Please Insert Student`s Matrix NO: ");
     scanf("%d", &matrix);
     printf("Please Insert Funds: ");
     scanf("%f", &duit);
     if ( ( USER = fopen( "user.txt", "r" ) ) == NULL ) {
         printf( "File could not be opened\n" );
     }
     else {
          fscanf( USER, "%d%d%f", &matrixF, &passF, &duitF );
          while ( !feof( USER ) ) { 
              if (matrixF == matrix) { k=i; matrix_[i] = matrix; pass_[i] = passF; duit_[i] = duitF; }
              else { matrix_[ i ] = matrixF; pass_[ i ] = passF; duit_[ i ] = duitF; }
              i++;
          fscanf( USER, "%d%d%f", &matrixF, &passF, &duitF );
     }
     fclose( USER );
     }
     dummy = duit_[k];
     duit = duit+dummy;
     duit_[k] = duit;
     if ( ( USER = fopen( "user.txt", "w" ) ) == NULL ) {
     printf( "File could not be opened\n" );
     }
     else {
        for(j=0;j<i;j++) {
            fprintf( USER, "%d %d %.2f\n", matrix_[ j ], pass_[ j ], duit_[ j ] );
        }
     fclose( USER );
     }
     m_2_1();
}
void m_2_1_5() {
     int matrixF,passF;
     float duitF;
     int i=0;
     int j;
     int k=999;
     FILE *USER;
     int matrix_[999];
     int pass_[999];
     float duit_[999];
     if ( ( USER = fopen( "user.txt", "r" ) ) == NULL ) {
         printf( "File could not be opened\n" );
     }
     else {
          fscanf( USER, "%d%d%f", &matrixF, &passF, &duitF );
          while ( !feof( USER ) ) { 
              matrix_[ i ] = matrixF;
              pass_[ i ] = passF;
              duit_[ i ] = duitF;
              i++;
              fscanf( USER, "%d%d%f", &matrixF, &passF, &duitF );
          }
     printf("\n\n\n");
     printf("Displaying User:\n");
     printf("No.    Matrix No     Password     Money\n");
     for(j=0;j<i;j++) {
         printf( "  %d      %d         %d     RM%7.2f\n",j+1, matrix_[ j ], pass_[ j ], duit_[ j ] );
     }
     printf("\n\n\n");
     fclose( USER );
     }
     m_2_1();
}