Dart Programming - do while Loop

The do while loop is similar to the while loop except that the do...while loop doesnt evaluate the condition for the first time the loop executes. However, the condition is evaluated for the subsequent iterations. In other words, the code block will be executed at least once in a dowhile loop.

The following illustration shows the flowchart of the dowhile loop −

Syntax

Following is the syntax for the do-while loop.

do {  
   Statement(s) to be executed;  
} while (expression); 

Note − Dont miss the semicolon used at the end of the do...while loop.

Usage of do while Loop

Example

void main() { 
   var n = 10; 
   do { 
      print(n); 
      n--; 
   }
   while(n>=0); 
}  

Output

The example prints numbers from 0 to 10 in the reverse order. The following output is displayed on successful execution of the above code.

10 
9 
8 
7 
6 
5 
4 
3 
2 
1 
0