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C++ While Loop

In C++, The while loop loops through a block of code as long the specified condition is met and equal to true:

C++ While Loop Syntax

while (condition) {
  // code block to be executed while condition is met
}

Example of C++ While loop

#include <iostream>

using namespace std;

int main() {
  int i = 0;
  while (i < 3) {
    cout << i << "\n";
    i++;
  }
  return 0;
}

Output

0
1
2

In this example you can see that the loop will keep executing while i is less than value 3.

Another example of C++ While loop

#include <iostream>

using namespace std;

int main() {
  int i = 0;
  while (i < 3) {
    cout << "My index is: " << i << "\n";
    i++;
  }
  return 0;
}

Output

My index is: 0
My index is: 1
My index is: 2


Conclusion

In this page (written and validated by ) you learned about C++ While Loop . What's Next? If you are interested in completing Cpp tutorial, your next topic will be learning about: Cpp Do While Loop.



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