Question

I know what != is when if(x!=value){…}, but what does it mean in the following context:

 if (! ReadConsoleInput(
                hStdin,      // input buffer handle
                irInBuf,     // buffer to read into
                128,         // size of read buffer
                &cNumRead) ) // number of records read
            ErrorExit("ReadConsoleInput");

or

if (! SetConsoleMode(hStdin, fdwMode) )
        ErrorExit("SetConsoleMode");

or

 if (! GetConsoleMode(hStdin, &fdwSaveOldMode) )
        ErrorExit("GetConsoleMode");

Answer 1

It’s the “Not” operator: true (1) if the operand is zero, false (0) otherwise.