C源代码的简单ATM银行模拟器.zip

#include <stdio.h> #include <stdlib.h> #include <stdbool.h> #include <math.h> void login(); void mainMenu(); void checkBalance(float balance); float moneyDeposit(float balance); float moneyWithdraw(float balance); void menuExit(); void errorMessage(); int main() { int option; float balance = 2000.00; int choose; bool again = true; while (again) { mainMenu(); printf("=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-\n"); printf("Your Selection:\t"); scanf("%d", &option); switch (option) { case 1: system("CLS"); checkBalance(balance); break; case 2: system("CLS"); balance = moneyDeposit(balance); break; case 3: system("CLS"); balance = moneyWithdraw(balance); break; case 4: system("CLS"); menuExit(); return 0; default: errorMessage(); break; } printf("=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=\n"); printf("Would you like to do another transaction:\n"); printf("< 1 > Yes\n"); printf("< 2 > No\n"); scanf("%d", &choose); system("CLS"); if (choose == 2) { again = false; menuExit(); } } return 0; } void mainMenu() { printf("**********Welcome to ATM Bank***********\n\n"); printf("****Please choose one of the options below****\n\n"); printf("< 1 > Check Balance\n"); printf("< 2 > Deposit\n"); printf("< 3 > Withdraw\n"); printf("< 4 > Exit\n\n"); }//Main Menu void checkBalance(float balance) { printf("You Choose to See your Balance\n"); printf("\n\n****Your Available Balance is: $%.2f\n\n", balance); }//Check Balance float moneyDeposit(float balance) { float deposit; printf("You choose to Deposit a money\n"); printf("Your Balance is: $%.2f\n\n", balance); printf("****Enter your amount to Deposit\n"); scanf("%f", &deposit); balance += deposit; printf("\n****Your New Balance is: $%.2f\n\n", balance); return balance; }//money deposit float moneyWithdraw(float balance) { float withdraw; bool back = true; printf("You choose to Withdraw a money\n"); printf("Your Balance is: $%.2f\n\n", balance); while (back) { printf("Enter your amount to withdraw:\n"); scanf("%f", &withdraw); if (withdraw < balance) { back = false; balance -= withdraw; printf("\nYour withdrawing money is: $%.2f\n", withdraw); printf("****Your New Balance is: $%.2f\n\n", balance); } else { printf("+++You don't have enough money+++\n"); printf("Please contact to your Bank Customer Services\n"); printf("****Your Balance is: $%.2f\n\n", balance); } } return balance; }//money withdraw void menuExit() { printf("--------------Take your receipt!!!------------------\n"); printf("-----Thank you for using ATM Banking Machine!!!-----\n"); }//exit menu void errorMessage() {; printf("+++!!!You selected invalid number!!!+++\n"); }