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continue

Description

The continue statement skips the rest of the current iteration of a loop (for, while, or do...while). It continues by checking the conditional expression of the loop, and proceeding with any subsequent iterations.

Example Code

Example with For Loop

Example 1

The following code exits the for loop when the i greater than 3

void setup() { Serial.begin(9600); Serial.println("====== TEST START ======"); for (int i = 1; i < 5; i++) { Serial.print("Inside the FOR loop: i = "); Serial.print(i); Serial.println(", start"); if(i > 2) continue; Serial.print("Inside the FOR loop: i = "); Serial.print(i); Serial.println(", end"); } Serial.println("====== TEST END ========"); } void loop() {}

The result on Serial Monitor:

COM6
Send
====== TEST START ====== Inside the FOR loop: i = 1, start Inside the FOR loop: i = 1, end Inside the FOR loop: i = 2, start Inside the FOR loop: i = 2, end Inside the FOR loop: i = 3, start Inside the FOR loop: i = 4, start ====== TEST END ========
Autoscroll Show timestamp
Clear output
9600 baud  
Newline  

Example 2

The following code writes the value of 0 to 255 to the PWMpin, but skips the values in the range of 41 to 119.

for (int x = 0; x <= 255; x ++) { if (x > 40 && x < 120) { // create jump in values continue; } analogWrite(PWMpin, x); delay(50); }

Example with While Loop

The following code exits the while loop when the i greater than 3

void setup() { Serial.begin(9600); Serial.println("====== TEST START ======"); int i = 0; while (i < 5) { i++; // increase i by 1 Serial.print("Inside the WHILE loop: i = "); Serial.print(i); Serial.println(", start"); if(i > 2) continue; Serial.print("Inside the WHILE loop: i = "); Serial.print(i); Serial.println(", end"); } Serial.println("====== TEST END ========"); } void loop() { }

The result on Serial Monitor:

COM6
Send
====== TEST START ====== Inside the WHILE loop: i = 1, start Inside the WHILE loop: i = 1, end Inside the WHILE loop: i = 2, start Inside the WHILE loop: i = 2, end Inside the WHILE loop: i = 3, start Inside the WHILE loop: i = 4, start ====== TEST END ========
Autoscroll Show timestamp
Clear output
9600 baud  
Newline  

Example with Do While Loop

The following code exits the while loop when the i greater than 3

void setup() { Serial.begin(9600); Serial.println("====== TEST START ======"); int i = 0; do { i++; // increase i by 1 Serial.print("Inside the DO WHILE loop: i = "); Serial.print(i); Serial.println(", start"); if(i > 2) continue; Serial.print("Inside the WHILE loop: i = "); Serial.print(i); Serial.println(", end"); } while (i < 5); Serial.println("====== TEST END ========"); } void loop() { }

The result on Serial Monitor:

COM6
Send
====== TEST START ====== Inside the DO WHILE loop: i = 1, start Inside the DO WHILE loop: i = 1, end Inside the DO WHILE loop: i = 2, start Inside the DO WHILE loop: i = 2, end Inside the DO WHILE loop: i = 3, start Inside the DO WHILE loop: i = 4, start ====== TEST END ========
Autoscroll Show timestamp
Clear output
9600 baud  
Newline  

See Also

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Arduino UNO R3
Arduino Starter Kit
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