在这里,我们将看到C中的kbhit功能。kbhit基本上是Keyboard Hit。此函数位于conio.h头文件中。因此,要使用此文件,我们必须将此头文件包含在我们的代码中。
其功能kbhit()
是,当按下某个键时,它返回非零值,否则返回零。
#include <stdio.h> #include <conio.h> main() { char ch; printf("Enter keys (ESC to exit)\n"); while (1) { //define infinite loop for taking keys if (kbhit) { ch = getch(); // Get typed character into ch if ((int)ch == 27) //when esc button is pressed, then it will comeout from loop break; printf("You have entered : %c\n", ch); } } }
输出结果
Enter keys (ESC to exit) You have entered : i You have entered : t You have entered : D You have entered : w You have entered : 5 You have entered : / You have entered : * You have entered : + You have entered : You have entered : o You have entered : You have entered : &
注意:这kbhit()
不是标准库。因此,我们应该在代码中避免这种情况。