I am new to C and i am working on a simple DOS program. Can anybody tell help me with a simple C function call that will return a character if one has been entered from the keyboard or a NULL if one has not, without stopping program execution and waiting for a CR as happens with getch (). If one is not avaible can somebody help me with some simple assembler code that would do this? Thanks in advance, Daniel.

getch() is a character input function with unbuffered input without echo, therefore it returns every character as soon as it is presed but does not echo it to the screen. #include #include main() { int ch; while ((ch = getch()) != '\r') putchar(ch); return 0; } while ((ch = getch()) != '\r')

you mentioned getch() waits for a carage return, I remembered that it is non-ANSI compilant so perhaps your compiler has defined it diferntly in the header file. You may want to check your documentation

i will like to ask how to write a c programming code, by write the star use * only use this symbol???

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DEAR FRIEND I AM TRYING TO FIND OUT THE FUNCTION THROUGH C IN WHICH IF THE USER DONT ENTER FOR SOME GIVEN STAPULIATED TIME IT SHOULD TAKE THE DEFAULT VALUE eg THE PROGRAM SHOULD WAIT FOR USER RESPONSE FOR SOME STIPULATED TIME.