getchar():

1, the input will not take effect until you press "Enter".

2. Only one character is received, not a string.

3. You can assign a value to it or use it as part of an expression.

Such as char c = getchar ();

4, it and getche (), the latter does not have to press "Enter".

Let me give you another example:

# include & ltstdio.h & gt

Master ()

{

char c 1，C2；

c 1 = getchar()；

C2 = getchar()；

putchar(c 1)；

putchar(C2)；

//You can also use printf("%c%c ",c 1, c2);

}

I think you should understand a lot after reading it. .