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关于c语言for循环break的使用

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关于c语言for循环break的使用
代码如下:

为什么输入n也不好使?还循环两次.
Do you want to enter some more(y/n):y
Do you want to enter some more(y/n):Do you want to enter some more(y/n):y
Do you want to enter some more(y/n):Do you want to enter some more(y/n):y
Do you want to enter some more(y/n):Do you want to enter some more(y/n):y
Do you want to enter some more(y/n):Do you want to enter some more(y/n):y
Do you want to enter some more(y/n):Do you want to enter some more(y/n):y
Do you want to enter some more(y/n):Do you want to enter some more(y/n):y
Do you want to enter some more(y/n):Do you want to enter some more(y/n):y
Do you want to enter some more(y/n):Do you want to enter some more(y/n):y
Do you want to enter some more(y/n):Do you want to enter some more(y/n):
在scanf和if之间加上函数getchar();
就好了.但为什么

在输入很多e之后,在输入n就退步出来了?
关于c语言for循环break的使用
清空一下缓冲区就可以了printf("Do you want to enter some more(y/n):");
fflush(stdin);
scanf("%c", &answer);
...
再问: 厉害!