问题
I'm trying to create a function that will printf a certain string if the user presses any button on the keyboard EXCEPT for capital P, if the user presses P then it will break the loop.
However I don't think I'm using _kbhit and _getch properly. I use the number 80 because that is the ASCII symbol for 80....sorry for any confusion
void activateAlarm(int channelID) {
int key = 0;
while(temperatureChannel[channelID].currentTemperature > temperatureChannel[channelID].highLimit
||temperatureChannel[channelID].currentTemperature < temperatureChannel[channelID].lowLimit) {
beep(350,100);
if (_kbhit()) {
key = _getch();
if(key == 'P');
break;
}
}
}
回答1:
No need to explain, the code talks better :
#include <conio.h>
// ...
printf("please press P key to pause \n ");
int key = 0;
while(1)
{
if (_kbhit())
{
key =_getch();
if (key == 'P')
break;
}
}
来源：https://stackoverflow.com/questions/15603082/how-to-use-kbhit-and-getch-c-programming