What is getch() in C?
The getch() is a predefined non-standard function that is defined in conio.h header file. It is mostly used by the Dev C/C++, MS- DOS's compilers like Turbo C to hold the screen until the user passes a single value to exit from the console screen. It can also be used to read a single byte character or string from the keyboard and then print. It does not hold any parameters. It has no buffer area to store the input character in a program.
Why we use a getch() function?
We use a getch() function in a C/ C++ program to hold the output screen for some time until the user passes a key from the keyboard to exit the console screen. Using getch() function, we can hide the input character provided by the users in the ATM PIN, password, etc.
Parameters: The getch() function does not accept any parameter from the user.
Return value: It returns the ASCII value of the key pressed by the user as an input.
Write a simple program to display the character entered by the user using the getch() function in C.
Passed value by the User is: P
To print any character on the console, press the corresponding key.
Write a simple program to hold the console screen until the user gives a key to exit.
Enter a key to exit the console screen.
Write a program to use the getch() function to accept the string from the user.
Received 5 character Input: hello
Write a program to use the getch() function to accept the hidden password from the user.
Enter password: ********** You have passed the hidden password: Password@1