关于计算器的使用
#include <stdio.h>static float sum=0,a=0,b=0,c=0,d=0,e=0,f=0;
float add(float op1,float op2)
{
float m;
printf("请输入一个数:\n");
scanf("%d", &op1);
printf("请输入另一个数:\n");
scanf("%d", &op2);
m=op1+op2;
return(m);
}
float subtraction(float op1,float op2)
{
float n;
printf("请输入一个数:\n");
scanf("%d", &op1);
printf("请输入另一个数:\n");
scanf("%d", &op2);
n=op1-op2;
return(n);
}
float cheng(float op1,float op2)
{
float o;
printf("请输入一个数:\n");
scanf("%d", &op1);
printf("请输入另一个数:\n");
scanf("%d", &op2);
o=op1*op2;
return(o);
}
float chu(float op1,float op2)
{
float p;
printf("请输入一个数:\n");
scanf("%d", &op1);
printf("请输入另一个数:\n");
scanf("%d", &op2);
p=op1/op2;
return(p);
}
void calculator()
{
int y;
float a,b,c,d;
printf("请选择运算模式:\n");
printf("1.加法\n");
printf("\n");
printf("2.减法\n");
printf("\n");
printf("3.乘法\n");
printf("\n");
printf("4.除法\n");
scanf("%d",&y);
switch(y)
{
case 1:a=float add(float,float);break;
case 2:b=float subtraction(float,float);break;
case 3:c=float cheng(float,float);break;
case 4:d=float chu(float,float);break;
default:printf ("输入错误！"); break;
}
printf("计算结果为:%.2f:\n");
}
void inquire()
{
printf("支出如下:\n");
printf("网 上 购 物 花 费:%.2f元:\n",a);
printf("超市购物花费:%.2f元:\n",b);
printf("吃饭花费:%.2f元:\n",c);
printf("其他花费:%.2f元:\n",d);
printf("\n");
printf("收入如下:\n");
printf("父母每月所给生活费:%.2f元:\n",e);
printf("兼职所得:%.2f元:\n",f);
printf("\n");
printf("当前余额为:%.2f元:\n",sum);
if(sum<0)
{
printf("0000000000000000000000000000000000000\n"); //感叹号表示已经超支！
printf("000000000000000000 000000000000000000\n");
printf("00000000000000000 00000000000000000\n");
printf("0000000000000000 0000000000000000\n");
printf("000000000000000 000000000000000\n");
printf("000000000000000 000000000000000\n");
printf("000000000000000 000000000000000\n");
printf("000000000000000 000000000000000\n");
printf("000000000000000 000000000000000\n");
printf("000000000000000 000000000000000\n");
printf("000000000000000 000000000000000\n");
printf("000000000000000 000000000000000\n");
printf("000000000000000 000000000000000\n");
printf("000000000000000 000000000000000\n");
printf("0000000000000000 0000000000000000\n");
printf("00000000000000000 00000000000000000\n");
printf("000000000000000000 000000000000000000\n");
printf("0000000000000000000000000000000000000\n");
printf("0000000000000000 0000000000000000\n");
printf("0000000000000000 0000000000000000\n");
printf("0000000000000000 0000000000000000\n");
printf("0000000000000000000000000000000000000\n");
printf("您已超支!\n");
}
else if(sum>100)
printf("您的消费情况良好!\n");
else
{
printf("请注意您的消费情况，有透支的危险!!!!!!\n");
}
}
void income()
{
float o,p,c=0;
printf("父母每月所给生活费:\n");
scanf("%f",&o);
e=e+o;
printf("兼职所得:\n");
scanf("%f",&p);
f=f+p;
c=c+e+f;
printf("当前收入总额:%.2f元\n",c);
sum=sum+e+f;
}
void disburse()
{
float g,h,i,j,k=0;
printf("网上购物花费:\n",a);
scanf("%f",&g);
a=a+g;
printf("超市购物花费:\n",b);
scanf("%f",&h);
b=b+h;
printf("吃饭花费:\n",c);
scanf("%f",&i);
c=c+i;
printf("其他花费:\n",d);
scanf("%f",&j);
d=d+j;
k=k+a+b+c+d;
printf("当前支出总额:%.2f元\n",k);
sum=sum-a-b-c-d;
}
void account()
{
int x;
printf("***********************************\n");
printf("1.支出 2.进账 3.退出 4.查询余额\n");
printf("***********************************\n");
scanf("%d",&x);
switch(x)
{
case 1: disburse();break;
case 2: income();break;
case 3: printf("欢迎使用，再见!\n");break;
case 4: inquire();break;
}
}
void password()
{
long int a;
int b=1;
do
{
printf("请输入密码!:\n");
scanf("%d",&a);
if(a==901223)
{
printf("密码输入正确，欢迎进入个人理财系统!\n\n\n\n\n");
b=0;
}
else
printf("密码输入错误!\n");
}
while(b);
}
void main()
{
password();
loop: int x;
printf("\n ***********************************************\n");
printf("\n");
printf("\n 个 人 理 财 系 统 1.0 by xiaochenxi\n");
printf("\n");
printf("\n ***********************************************\n");
printf("\n");
printf("\n");
printf(" 请选择管理项目:\n");
printf("\n");
printf(" 1.详细账目输入\n");
printf("\n");
printf(" 2.查询当前余额\n");
printf("\n");
printf(" 3.小工具（计算器）\n");
printf("\n");
printf(" 4.退出\n");
scanf("%d",&x);
switch(x)
{
case 1: account();goto loop;break;
case 2: inquire();goto loop;break;
case 3: calculator();goto loop;break;
case 4: printf ("欢迎再次使用，再见！"); break;
default:printf ("输入错误！"); break;
}
}
