pfr2ewuin/student(1).c

#include"stdio.h"
#include"stdlib.h"  //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD>ļ<EFBFBD>// 
#include"time.h"	//ʱ<>亯<EFBFBD><E4BAAF>ͷ<EFBFBD>ļ<EFBFBD>// 
int add(int j,int x, int y); //<2F>ӷ<EFBFBD><D3B7><EFBFBD><EFBFBD><EFBFBD>// 
void sub(int j,int x, int y); //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>// 
int sum=0;					//<2F><>¼<EFBFBD>÷<EFBFBD>// 
int pd(int result)    //*<2A>ж<EFBFBD><D0B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><C7B7><EFBFBD>ȷ <20><>ȷ <20><><EFBFBD><EFBFBD>1 <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD>-1*// 
{	int n;
	scanf("%d",&n);
	if(result==n)
		return 1;
	return -1;
}
void jifen(int result)		//<2F><><EFBFBD>ݴ<EFBFBD><DDB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƿ֣<C7B7><D6A3>ۼӵ<DBBC>sum// 
{
	if(pd(result)==1)
			sum+=10;
	else
	{   
		printf("\n<EFBFBD>𰸴<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>:");	//<2F><>һ<EFBFBD><D2BB> // 
		if(pd(result)==1) 
			sum+=7;
		else
		{
			printf("\n<EFBFBD>𰸴<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>:");	//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>// 
			if(pd(result)==1) 
				sum+=5;
			else
				printf("\n<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD>:\n");	//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>// 
		}
	} 
}
int main()
{	
	int i,x,y,ch,z;
	srand(time(NULL));//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͬ<EFBFBD><CDAC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>// 
	printf("Сѧ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>\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)   //<2F><><EFBFBD>³<EFBFBD>һ<EFBFBD><D2BB>// 
						i=i-1;
					break;
			case 1: sub(i+1,x,y);
					break;
			default:
					printf("ϵͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>");		
		}
	}
	printf("<EFBFBD><EFBFBD><EFBFBD>ķ<EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><EFBFBD>%d",sum);
	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("ϵͳ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>");
	return 0;
		
} 
int add(int j,int x,int y)  
{
	int result;
	result=x+y;		
	if(result>50)   //<2F>ж<EFBFBD><D0B6>Ƿ񳬳<C7B7><F1B3ACB3><EFBFBD>Χ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>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)     //<2F><>֤<EFBFBD><D6A4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>0// 
	{
		t=x; x=y ; y=t;
	}
	result=x-y;
	printf("%d:%d-%d=",j,x,y);
	jifen(result);
}