C++ For Loop

A loop is used for executing a block of statements repeatedly until a particular condition is met.

C++ For loop Syntax

for (statement 1; statement 2; statement 3) {
  // code block to be executed every loop
}

From the above syntax we can see that for has 3 statements:

Statement 1 is a starting point and will executed one time only.
Statement 2 is the condition defined to be met so for loop will end.
Statement 3 is step which the loop rely on and will be executed every time we loop.

Example of C++ For Loop

Below Example will be doing a ascending order.

#include <iostream>

using namespace std;

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

Output

0
1
2

Another example of C++ For Loop

Below Example will be doing a descending order.

#include <iostream>
using namespace std;

int main() {
  for (int i = 3; i > 0; i--) {
    cout << i << "\n";
  }
  return 0;
}

Output

3
2
1

Conclusion

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

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