From 9a5809b8889d7156115f66f21ba0729f0850a8aa Mon Sep 17 00:00:00 2001
From: unknown <3181953352@qq.com>
Date: Fri, 11 Jan 2019 10:03:52 +0800
Subject: [PATCH] first commit

---
 student.c | 92 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 92 insertions(+)
 create mode 100644 student.c

diff --git a/student.c b/student.c
new file mode 100644
index 0000000..d4f4545
--- /dev/null
+++ b/student.c
@@ -0,0 +1,92 @@
+#include"stdio.h"
+#include"stdlib.h"  //随机函数头文件// 
+#include"time.h"	//时间函数头文件// 
+int add(int j,int x, int y); //加法计算// 
+void sub(int j,int x, int y); //减法计算// 
+int sum=0;					//记录得分// 
+int pd(int result)    //*判断输入是否正确 正确 返回1 错误 返回-1*// 
+{	int n;
+	scanf("%d",&n);
+	if(result==n)
+		return 1;
+	return -1;
+}
+void jifen(int result)		//根据错误次数记分，累加到sum// 
+{
+	if(pd(result)==1)
+			sum+=10;
+	else
+	{   
+		printf("\n答案错误请重新输入:");	//错一题 // 
+		if(pd(result)==1) 
+			sum+=7;
+		else
+		{
+			printf("\n答案错误请重新输入:");	//错两题// 
+			if(pd(result)==1) 
+				sum+=5;
+			else
+				printf("\n答错三次请继续解答下一题:\n");	//错三题// 
+		}
+	} 
+}
+int main()
+{	
+	int i,x,y,ch,z;
+	srand(time(NULL));//随机函数 产生不同的随机数// 
+	printf("小学生计算题\n");
+	for(i=0;i<10;i++)
+	{	
+		x=rand()%51;
+		y=rand()%51;
+		ch=rand()%2; 
+		switch(ch)
+		{	
+			case 0: z=add(i+1,x,y); 
+					if(z==1)   //重新出一题// 
+						i=i-1;
+					break;
+			case 1: sub(i+1,x,y);
+					break;
+			default:
+					printf("系统出错");
+					break;		
+		}
+	}
+	if(sum>=90&&sum<=100)
+		printf("SMART");
+	else if(sum>=80)
+		printf("GOOD");
+	else if(sum>=70)
+		printf("OK");
+	else if(sum>=60)
+		printf("PASS");
+	else if(sum>=0)
+		printf("TRY AGAIN");
+	else
+		printf("系统错误");
+//	printf("%d",sum);
+	return 0;
+		
+} 
+int add(int j,int x,int y)  
+{
+	int result;
+	result=x+y;		
+	if(result>50)   //判断是否超出范围 超出返回1// 
+		return 1;
+	printf("%d:%d+%d=",j,x,y);		
+	jifen(result);
+	return -1;
+}
+void sub(int j,int x,int y)
+{
+	int result,t;
+	if(x<y)     //保证差大于0// 
+	{
+		t=x; x=y ; y=t;
+	}
+	result=x-y;
+	printf("%d:%d-%d=",j,x,y);
+	jifen(result);
+}
\ No newline at end of file