四则运算
软件工程 | < https://edu.cnblogs.com/campus/ahgc/AHPU-se-JSJ18/> |
---|---|
这个作业要求在哪里 | https://edu.cnblogs.com/campus/ahgc/AHPU-se-JSJ18/homework/11377 |
这个作业的目标 | <简单的四则运算,是一个小型的系统> |
学号 | <3180701239> |
include <stdio.h>
include <ctype.h>
include <time.h>
include <stdlib.h>
include <windows.h>
define IDNO_LENGTH 6
define CALC_KIND 4
char getSignal();
int getResult(int,int,char);
void takeTest();
void falsePrint(int);
void correctPrint(int);
//main函数
void main()
{
while(1)
{
takeTest();
}
}
//获取随机运算符
char getSignal()
{
char signal[CALC_KIND]={'+','-','','/'};
srand((unsigned)time(NULL));
return signal[rand()%4];
}
//获取随机数
int random(double start, double end)
{
return (int)(start+(end-start)rand()/(RAND_MAX+ 1.0));
}
//运算
int getResult(int num1,int num2,char signal)
{
int res;
switch(signal)
{
case '+':
res=num1+num2;break;
case '-':
res=num1-num2;break;
case '':
res=num1num2;break;
case '/':
res=num1/num2;break;
default:
res=0;
printf("运算符不符合规则\n");
}
return res;
}
//列出题目
void takeTest()
{
int giveRes;
int num1;
int num2;
char signal;
int printFlag;
srand((unsigned)time(NULL));
signal=getSignal();
num1=random(0,100);
num2=random(1,100);
if(signal'-')
{
if(num1<num2)
{
int temp;
temp=num1;
num1=num2;
num2=temp;
}
}
if(signal'/')
{
if(num2==0)
{
int temp;
temp=num1;
num1=num2;
num2=temp;
}
}
printf("%d%c%d=",num1,signal,num2);
scanf("%d",&giveRes);
fflush(stdin);
if(getResult(num1,num2,signal)==giveRes)
{
printFlag=random(1,5);
correctPrint(printFlag);
}
else
{
printFlag=random(1,4);
falsePrint(printFlag);
printf("正确答案:%d\n",getResult(num1,num2,signal));
}
}
//回答正确打印信息
void correctPrint(int num)
{
switch(num)
{
case 1:
printf("You're right!\n");break;
case 2:
printf("It's OK!\n");break;
case 3:
printf("Correct!\n");break;
case 4:
printf("Perfect!\n");break;
case 5:
printf("Good!\n");break;
default:
printf("Powerful!\n");break;
}
}
//回答错误打印信息
void falsePrint(int num)
{
switch(num)
{
case 1:
printf("You're lost!");break;
case 2:
printf("Failure!");break;
case 3:
printf("Come on!");break;
case 4:
printf("It's wrong!");break;
default:
printf("Incorrect!");break;
}
}
运行截图:
个人小结:
psp2.1 任务内容 计划完成需要的时间(min) 实际完成需要的时间(min)
Planning 计划 10 8
Estimate 估计这个任务需要多少时间,并规划大致工作步骤 10 20
Development 开发 100 200
Analysis 需求分析(包括学习新技术) 12 11
Design Spec 生成设计文档 5 5
Design Review 设计复审 5 5
Coding Standard 代码规范 3 2
Design 具体设计 10 15
Coding 具体编码 36 35
Code Review 代码复审 5 7
Test 测试(自我测试,修改代码,提交修改) 10 15
Reporting 报告 9 6
Test Report 测试报告 3 2
Size Measurement计算工作量 2 1
Postmortem & Process Improvement Plan 事后总结,并提出过程改进计划 3 3