C语言猜拳程序 scanf不执行……

发布网友 发布时间：2022-04-25 00:09

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热心网友 时间：2023-07-26 22:09

//当你输入y或者n的时候，按下了回车。而程序只把第一个字符y或者n读入给a，回车\n还在缓冲区中，也算一个字符。所以第二次scanf的时候，由于缓冲区内有个回车，它直接读取出来了。而不是让你输入。然后跳出while循环直接结束了。关于这方面的内容可以在网上搜点资料看看
#include<stdio.h>
#include<stdlib.h>
#include<time.h>

int main()
{
int userchoice,computerchoice,result,b;
char a;
a='y';
do
{
printf("Please input your choice:\n0 paper\n1 scissors\n2 rock\n");
scanf("%d",&userchoice);
switch(userchoice){
case 0:
printf("You pick paper\n");
break;
case 1:
printf("You pick scissors\n");
break;
case 2:
printf("You pick rock\n");
break;
default:
printf("Error!\n");
}
srand(time(0));
computerchoice = rand()%3;
switch(computerchoice){
case 0:
printf("Computer pick paper\n");
break;
case 1:
printf("Computer pick scissors\n");
break;
case 2:
printf("Computer pick rock\n");
break;
}
result = userchoice - computerchoice;
switch(result){
case -2:
printf("You Wins!\n");
break;
case -1:
printf("Computer Wins!\n");
break;
case 0:
printf("Tie!\n");
break;
case 1:
printf("You Wins!\n");
break;
case 2:
printf("Computer Wins!\n");
break;
default:
printf("Error!\n");}
printf("Do you want to paly again?(y/n)\n");
fflush(stdin); //清除缓冲区内的内容
scanf("%c",&a);
} while(a=='y');
}

热心网友 时间：2023-07-26 22:10

#include<stdio.h>
#include<stdlib.h>
#include<time.h>

int main(){
int userchoice,computerchoice,result;
clrscr();/*清屏*/
do
{
printf("Please input your choice:\n0 paper\n1 scissors\n2 rock\n");
scanf("%d",&userchoice);
switch(userchoice){
case 0:
printf("You pick paper\n");
break;
case 1:
printf("You pick scissors\n");
break;
case 2:
printf("You pick rock\n");
break;
default:
printf("Error!\n");
}
srand(time(0));
computerchoice = rand()%3;
switch(computerchoice){
case 0:
printf("Computer pick paper\n");
break;
case 1:
printf("Computer pick scissors\n");
break;
case 2:
printf("Computer pick rock\n");
break;
}
result = userchoice - computerchoice;
switch(result){
case -2:
printf("You Wins!\n");
break;
case -1:
printf("Computer Wins!\n");
break;
case 0:
printf("Tie!\n");
break;
case 1:
printf("You Wins!\n");
break;
case 2:
printf("Computer Wins!\n");
break;
default:
printf("Error!\n");
}
printf("Do you want to paly again?(y/n)");
getchar();/*读出\N*/
}
while(getchar()=='y');
}

热心网友 时间：2023-07-26 22:10

while(a='y');
改为
while(a=='y');
你开始的语句是赋值语句呵