C++ - 有什么方法可以将输入插入缓冲区/停止需要输入的 cin.ignore？

Question

Pretty much as the title says. I'm creating a code segment and need to clear the buffer before it in order to start a new input, however, when using cin.ignore() , the buffer is cleared but the user is required to hit another enter afterward. Is there any way I can insert an enter into the buffer to automatically hit enter for the user, or that I can get cin.ignore to not require another enter.

I am using cin.getline to retrieve the input.

void Clear(){
    cin.clear();
    cin.ignore(250, '\n');
}

Answer 1

2 issues:

• The first parameter in the "std::cin.ignore()" that you are using just comes down to a very large number. This should be the maximum number of characters that the input buffer can hold . This number may be different on different systems or even header files for different compilers.

• You need to press enter twice because there is nothing in the buffer to ignore . It is waiting for something to be entered to ignore. some people will use this to pause the program before the "return 0;".