The kbhit function returns a non-zero value when there is an input character available in the keyboard buffer.

#include <conio.h>

int kbhit(void);

Remarks

Be careful when using this function since the calling thread will not sleep. Typical use where the function is called repeatedly until a key is pressed will cause the thread to execute continuously. Consider using getche or getch instead.

Return Values

A non-zero value indicates that there is data in the keyboard buffer. A zero value indicates there is no data in the keyboard buffer.

Requirements