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iOS Swift Basics (retired) Control Flow For-Condition-Increment

handsome nguyen
handsome nguyen
330 Points
Posted by handsome nguyen
handsome nguyen
330 Points

For loop vs while loop

How come for the While loop, if we put index++ before the println then it creates an error, But when reformatted into the For loop, the index++ is put before the println and everything is fine?

1 Answer

Ruggiero A
Ruggiero A
8,534 Points
Ruggiero A
Ruggiero A
8,534 Points

The for loop is a particular construct. The first statement (var i = 0), is executed only once, before the loop begins. The condition is verified each loop, just as the while, and the final statement is executed at the end of the loop, just before it repeats, just like Amit did in the While loop.