untitled5.m

时间函数举例4,一个猜数游戏

#include "time.h" 
#include "stdlib.h" 
#include "stdio.h" 
main() 
{ 
char c; 
clock_t start,end; 
time_t a,b; 
double var; 
int i,guess; 
srand(time(NULL)); 
printf("do you want to play it.('y' or 'n') \n"); 
loop: 
while((c=getchar())=='y') 
{ 
i=rand()%100; 
printf("\nplease input number you guess:\n"); 
start=clock(); 
a=time(NULL); 
scanf("%d",&guess); 
while(guess!=i) 
{ 
if(guess>i) 
{ 
printf("please input a little smaller.\n"); 
scanf("%d",&guess); 
} 
else 
{ 
printf("please input a little bigger.\n"); 
scanf("%d",&guess); 
} 
} 
end=clock(); 
b=time(NULL); 
printf("\1: It took you %6.3f seconds\n",var=(double)(end-start)/18.2); 
printf("\1: it took you %6.3f seconds\n\n",difftime(b,a)); 
if(var<15) 
printf("\1\1 You are very clever! \1\1\n\n"); 
else if(var<25) 
printf("\1\1 you are normal! \1\1\n\n"); 
else 
printf("\1\1 you are stupid! \1\1\n\n"); 
printf("\1\1 Congradulations \1\1\n\n"); 
printf("The number you guess is %d",i); 
} 
printf("\ndo you want to try it again?(\"yy\".or.\"n\")\n"); 
if((c=getch())=='y') 
goto loop; 
}