C代码和python代码：模拟ATM（自动柜员机）界面

目录

• 一、前言与总结
• 二、C代码
• 三、Python代码

一、前言与总结

1. python中没有可以替代 switch 语句的，
   所以那些break都是没有作用的，可以删除掉

用途	C语言	Python
清屏	system("cls")	i = os.system("cls")
暂停	getchar()	k=input()

二、C代码

运行环境：VS2017
以下是代码：

#include <stdio.h>
#include <stdlib.h>
int main()
{
	char SelectKey,CreditMoney,DebitMoney;
	while(1)
	{
		do{
			system("cls");
			puts("=========================");
			puts("|  Please select key:   |");
			puts("|  1. Quary             |");
			puts("|  2. Credit            |");
			puts("|  3. Debit             |");
			puts("|  4. Return            |");
			puts("=========================");
			SelectKey = getch();
		}while( SelectKey!='1' && SelectKey!='2' && SelectKey!='3' && SelectKey!='4' );
		switch(SelectKey)
		{
			case '1':
				system("cls");
				puts("================================");
				puts("|    Your balance is $1000.    |");
				puts("|  Press any key to return...  |");
				puts("================================");
				getchar();
				break;
			case '2':
				do{
					system("cls");
					puts("==================================");
					puts("|   Please select Credit money:  |");
					puts("|   1. $50                       |");
					puts("|   2. $100                      |");
					puts("|   3. Return                    |");
					puts("==================================");
					CreditMoney = _getch();
				}while( CreditMoney!='1' && CreditMoney!='2' && CreditMoney!='3' );
				switch(CreditMoney)
				{
					case '1':
						system("cls");
						puts("=========================================");
						puts("|  Your Credit money is $50,Thank you!  |");
						puts("|         Press any key to return...    |");
						puts("=========================================");
						getchar();
						break;
					case '2':
						system("cls");
						puts("==========================================");
						puts("|  Your Credit money is $100,Thank you!  |");
						puts("|         Press any key to return...     |");
						puts("==========================================");
						getchar();
						break;
					case '3':
						break;
				}
				break;
			case '3':
				do{
					system("cls");
					puts("====================================");
					puts("|   Please select Debit money:     |");
					puts("|   1. $50                         |");
					puts("|   2. $100                        |");
					puts("|   3. $500                        |");
					puts("|   4. $1000                       |");
					puts("|   5. Return                      |");
					puts("====================================");
					DebitMoney = _getch();
				}while(	DebitMoney!='1' && DebitMoney!='2' && DebitMoney!='3' \
				 && DebitMoney!='4' && DebitMoney!='5' );
				switch(DebitMoney)
				{
					case '1':
						system("cls");
						puts("===========================================");
						puts("|   Your Debit money is $50,Thank you!    |");
						puts("|        Press any key to return...       |");
						puts("===========================================");
						getchar();
						break;
					case '2':
						system("cls");
 						puts("===========================================");
						puts("|   Your Debit money is $100,Thank you!   |");
						puts("|        Press any key to return...       |");
						puts("===========================================");
						getchar();
						break;
					case '3':
						system("cls");
						puts("===========================================");
						puts("|   Your Debit money is $500,Thank you!   |");
						puts("|        Press any key to return...       |");
						puts("===========================================");
						getch();
						break;
					case '4':
						system("cls");
						puts("===========================================");
						puts("|   Your Debit money is $1000,Thank you!  |");
						puts("|        Press any key to return...       |");
						puts("===========================================");
						getchar();
						break;
					case '5':
						break;
				}
				break;
			case '4':
				system("cls");
				puts("================================");
				puts("|   Thank you for your using!  |");
				puts("|            Good bye!         |");
				puts("================================");
				return 0;
		}
	}
	getchar();
	getchar();
	return 0;
}

三、Python代码

运行环境：Pycharm，python3.74
pycharm中的 i=os.system("cls") 清屏效果没有体现，凑合着用
以下是代码：

import os
import time

def SK():
	"""
	银行机器的选择键
	"""
	i=os.system("cls")
	print("=========================")
	print("|  Please select key:   |")
	print("|  1. Quary             |")
	print("|  2. Credit            |")
	print("|  3. Debit             |")
	print("|  4. Return            |")
	print("=========================")
	SelectKey = input()
	return SelectKey

def CM():
	"""
	CM()是贷款的菜单选项
	"""
	i=os.system("cls")
	print("==================================")
	print("|   Please select Credit money:  |")
	print("|   1. $50                       |")
	print("|   2. $100                      |")
	print("|   3. Return                    |")
	print("==================================")
	CreditMoney = input()
	return CreditMoney

def CM1( x):
	"""
	贷款的提示语
	"""
	i=os.system("cls")
	print("=========================================")
	print("|  Your Credit money is ", x,"Thank you!  |")
	print("|         Press any key to return...    |")
	print("=========================================")
	m = int(0)
	return m

def DM():
	"""
	DM()是借钱的菜单选项
	"""
	i=os.system("cls")
	print("====================================")
	print("|   Please select Debit money:     |")
	print("|   1. $50                         |")
	print("|   2. $100                        |")
	print("|   3. $500                        |")
	print("|   4. $1000                       |")
	print("|   5. Return                      |")
	print("====================================")
	DebitMoney = input()
	return DebitMoney

def DM1(x):
	"""
	借钱的提示语
	"""
	i=os.system("cls")
	print("===========================================")
	print("|   Your Debit money is ", x, ",Thank you!    |")
	print("|        Press any key to return...       |")
	print("===========================================")
	m = int(0)
	return m

def R():
	"""
	这是返回主菜单的过渡页
	"""
	i=os.system("cls")
	print("****** ",end="")
	time.sleep(1)
	print("Please wait patiently. ",end="")
	time.sleep(1)
	print("******")

def main():
	while 1:
		SelectKey=SK()
		while SelectKey!='1' and SelectKey!='2' and SelectKey!='3' and SelectKey!='4':
			SelectKey=SK()
		if SelectKey=='1':
			i=os.system("cls")
			print("================================")
			print("|    Your balance is $1000.    |")
			print("|  Press any key to return...  |")
			print("================================")
			k=input()
			R()

		elif SelectKey=='2':
			CreditMoney = CM()
			while CreditMoney != '1' and CreditMoney != '2' and CreditMoney != '3':
				CreditMoney = CM()
			if CreditMoney == '1':
				m = CM1(50)
				k=input()
			elif CreditMoney == '2':
				m = CM1(100)
				k=input()
			else:
				R()

		elif SelectKey=='3':
			DebitMoney = DM()
			while DebitMoney!='1' and DebitMoney!='2' and DebitMoney!='3' \
				and DebitMoney!='4' and DebitMoney!='5':
				DebitMoney = DM()
			if DebitMoney == '1':
				n=DM1(50)
				k=input()
			elif DebitMoney == '2':
				n=DM1(100)
				k=input()
			elif DebitMoney == '3':
				n=DM1(500)
				k=input()
			elif DebitMoney == '4':
				n=DM1(1000)
				k=input()
			else:
				R()

		else:
			i=os.system("cls")
			print("================================")
			print("|   Thank you for your using!  |")
			print("|            Good bye!         |")
			print("================================")
			return 0

main()