Getch () ():
The header file: conio.h
function Purpose: Read a character from the console, but not on the screen
char ch; or int ch;
Getch () (); or Ch=getch () ();
Use Getch (), wait for you to press any key, then continue to execute the following statement;
With Ch=getch (), wait for you to press any key, assign the ASCII code corresponding to the key character to CH, and then execute the following statement.
GetChar () ():
The function is declared in the stdio.h header file and is used to include the stdio.h header file. Such as:
int GetChar () (void);
Getch and GetChar () have the same basic functionality, the difference is getch directly from the keyboard to get the key value, wait for the user to press ENTER, as long as the user presses a key, Getch immediately return, Getch return value is the user entered the ASCII code, error return-1. The characters you enter do not echo back to the screen. Getch functions are often used in program debugging, when debugging, display the relevant results in a critical position for viewing, and then suspend the program with the Getch function, and the program continues to run when you press any key.