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

Why isnt the test condition that x<= 10 being implemented?

Below are two set of codes which look almost exactly the same. For the first one both the condition that x <= 10 and y >= 1 are being followed when I print the results. But for the second code the condition that x <= 10 and y >= 1 is not being followed, in fact it fulfill the condition for y >= 1 but not for x<=10. could someone please explain me why?This link might be helpful https://www.gnu.org/software/gnu-c-manual/gnu-c-manual.html#The-for-Statement int x, y; for (x = 1, y = 10; x <= 10 && y >= 1; x+=2, y--) printf ("%d %d\n", x, y);

int x, y; for (x = 1, y = 10; x <= 10 , y >= 1; x+=2, y--) printf ("%d %d\n", x, y);

1 Answer

YOu should read the link that you provided where it says.

Perhaps confusingly, you cannot use the comma operator (see The Comma Operator) for monitoring multiple variables in a for statement, because as usual the comma operator discards the result of its left operand.

You need to use the && operator.