what is function of getch

Answer 1

getch() is a nonstandard function and is present in conio.h header file which is mostly used by MS-DOS compilers like Turbo C.
It is not part of the C standard library or ISO C, nor is it defined by POSIX (Source: http://en.wikipedia.org/wiki/Conio.h)

It reads a single character from keyboard. But it does not use any buffer, so the entered character is immediately returned without waiting for the enter key.

Answer 2

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Answer 3

getch is a function it is included in header file conio.h

Answer 4

did you mean what does it do ?
oh it depends where you are using it
Sometimes it is used to program execution or else it is used to input a charecter

Answer 5

what can I do when my program ask me to input some number