/*********************************************************
* From C PROGRAMMING: A MODERN APPROACH, by K. N. King *
* Copyright (c) 1996 W. W. Norton & Company, Inc. *
* All rights reserved. *
* This program may be freely distributed for class use, *
* provided that this copyright notice is retained. *
*********************************************************/
/* checking.c (Chapter 6, page 101) */
/* Balances a checkbook */
/*账目簿结算*/
#include <stdio.h>
main()
{
int cmd;
float balance = 0.0, credit, debit;
printf("*** ACME checkbook-balancing program ***\n");
printf("Commands: 0=clear, 1=credit, 2=debit, ");
printf("3=balance, 4=exit\n\n");
for (;;) {
printf("Enter command: ");
scanf("%d", &cmd);
switch (cmd) {
case 0:
balance = 0.0; //刷新账户余额
break; //跳出整个循环
case 1:
printf("Enter amount of credit: ");
scanf("%f", &credit);
balance += credit; //balance=balance+credit 往账户上存钱
printf("balance=%f\n",balance);
break;
case 2:
printf("Enter amount of debit: ");
scanf("%f", &debit);
balance -= debit; //balance=balance-debit 从账户上取钱
break;
case 3:
printf("Current balance: $%.2f\n", balance); //显示当前的余额
break;
case 4:
return 0; //退出程序
default:
printf("Commands: 0=clear, 1=credit, 2=debit, ");
printf("3=balance, 4=exit\n\n");
break;
}
}
}
本文转自dllglvzhenfeng51CTO博客，原文链接：http://blog.51cto.com/1443208/304501，如需转载请自行联系原作者
