This is only true in trivial form - you can write code to detect the initialiser variable and break out of the loop but it is far more effort that its worth -it is just easier to use the while loop.Q: While loops and for loops can never perform the same way (T/F)? True or fal...
break用于跳出switch、while、do……while和for结构。 continue用于在while、do……while和for循环结构中结束当前循环。 return用于立即结束当前程序执行。 goto用于将程序执行流程跳转到指定位置后继续执行。 5.3 分支语句switch case 5.4 循环语句while和do……while 5.4.1 通过while结构就可以使计算机重复地执行一些语句...
}while(X <100); //当x小于100时,继续运行,当x不小于100的时候就不运行了 2.7 break break用于退出do,for,while循环,能绕过一般的判断条件。它也能够用于退出switch语句。 例子 for (x = 0; x < 255; x ++) { digitalWrite(PWMpin, x); sens = analogRead(sensorPin); if (sens > threshold){ x...
do…while 循环与 while 循环运行的方式是相近的,不过它的条件判断是在每个循环的 最后,所以这个语句至少会被运行一次,然后才被结束。 do { //语句 }while(测试条件); 例子 do { delay(50); //等待传感器稳定 X=readSensors();//检查传感器取值 }while( X<100); //当 x小于 100时,继续运行7 2.7 br...
(LED_PIN, OUTPUT); } void loop() { // read raw accel/gyro measurements from device accelgyro.getMotion6(&ax, &ay, &az, &gx, &gy, &gz); // these methods (and a few others) are also available //accelgyro.getAcceleration(&ax, &ay, &az); //accelgyro.getRotation(&gx, &gy,...
问使用Arduino串行监视器和嵌套循环与不同的外围设备通信EN一、安装树莓派及arduino开发环境 搭建树莓...
while ( 1 ) { if ( is_motor_running ) { // It does indeed run! // If something-something, check stuff. // Is motor still running? if( ! is_motor_running ) break ; delay( 100 ) ; } // It's not running, do something!
Improving logging message while waiting for WiFi by @ramprasadg in #10739 Zigbee Fix(zigbee): Fixes of timeout, example, warnings and bounding + add a 2MB part scheme for Zigbee ED by @P-R-O-C-H-Y in #10817 Boards Additions & Updates Feat(board): Add custom board YB-ESP32-S3-ET...
To allow for this early exit, C/C++ gives you the break statement that you can use inside the loop body to immediately "break out" of the loop. This prevents the remaining iterations from executing. TIP: You can also use the function break to exit a while loop....
voidloop() { startMillis = millis(); //peakToPeak = 0; signalMax = 0; signalMin = 1024; // Get data in 50ms while(millis() - startMillis < sampleWindow) { sample = analogRead(sensorPin); if(sample < 1024) { if(sample > signalMax) { ...