我正在为自己的个人休闲和学习而开展一个项目。部分内容如下:
#include<stdio.h>
#include<string.h>
wgame()
{
char string3[12], string2[12], string1[12], string4[12], string5[12];
memset (string1, 0, 11);
memset (string2, 0, 11);
memset (string3, 0, 11);
memset (string4, 0, 11);
memset (string5, 0, 11);
printf("reference C correct\n");
printf("Okay, so you want a game. Here's one for you\n\n\n");
printf("This is a word game.\n\n A noun is a person place or thing.\n A verb is
something that you can get up and do.\n A subject is what the conversation is about.\n");
printf("Go ahead, type a subject:\n");
gets(string3);
printf("That's a good one. Now, type a verb:\n");
gets(string2);
printf("How about another:\n");
gets(string4);
printf("Really? Okay. Now, type in a noun:\n");
gets(string1);
printf("Cool. How about typing another noun:\n");
gets(string5);
printf("Allright, here's how your words fit into this game:\n\n\n\n\n");
printf("When the %s was %s the %s %s all the other %s", string1,
string2, string3, string4, string5);
return 4;
}
我的问题是输出正在跳过第一个“gets(string#)”并继续执行 下一个“printf()”。有人能告诉我为什么会这样吗?
答案 0 :(得分:4)
可能在wgame
之前你正在做一些scanf
,在stdio缓冲区中留下\n
。
以下是您应该做的一些事情:
scanf
和gets
gets
。使用fgets
fflush(stdin)
。这是错误的。非常谨慎和适度,您可以使用:
/* Right before `wgame` begins. */
while((c = getchar()) != '\n' && c != EOF)
;
但是,请注意应该谨慎使用,丢弃用户输入是危险的。
阅读关于这个主题的C FAQ,以及关于刷新stdin的explanation。
答案 1 :(得分:0)
#include<stdio.h>
#include<stdlib.h>
#define size 5
void main()
{
char *str,*name[size];
int i,n;
scanf("%d",&n);
printf("%d",n);
fflush(stdin); // using fflush here gets() isn't skipping else i have to use scanf()
for(i = 0; i < n; i++)
{
str = (char*)malloc(20*sizeof(char));
printf("enter a name :\n");
//scanf("%s",str);
gets(str);
name[i]=str;
}
printf("the entered names :\n");
for(i = 0; i < n; i++)
puts(name[i]);
}