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iOS Objective-C Basics (Retired) Functional Programming in C Loops

John McDermott
John McDermott
1,417 Points
Posted by John McDermott
John McDermott
1,417 Points

How many times will the following loop execute? Is the answer correct?

I'm confused about how the answer to this question is "once".

How many times will the following loop execute? int i = 1; do { printf("looping"); } while ( i < 1 ) ;

If i=1 then i<1 is never true. Therefore, I don't understand how the printf("looping"); can be executed. Why is the answer not "never" or "zero"? Thanks for the help.

1 Answer

Joe Timmons
Joe Timmons
4,331 Points
Joe Timmons
Joe Timmons
4,331 Points

This is a do/while loop. The "Do" part is executed before the "While" condition is checked. This means it will always execute at least one time and continue to loop as long as the condition is true.

Hope that helps!

-Joe