printf function in c

Question

Does printf function in c calls argument by reference or by value?

paxdiablo · Accepted Answer · 2010-12-07 06:38:28Z

12

Everything in C is passed by value.

Even things that look like they're passed by reference (i.e., pointers to variables so that you can change the underlying variables) are in fact the values of the pointers being passed by value.

edited Dec 7, 2010 at 6:38

answered Dec 7, 2010 at 6:32

paxdiablo

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2 Comments

Umesha MS Over a year ago

hi paxdiablo, let us consider we are passing the variable argument to a function in C++ then will they be passed by value or reference?

paxdiablo Over a year ago

@Umesha, C++ has proper reference types, I believe. C doesn't have them. If you're talking about passing from C to C++, you're still limited by C's idioms unless you rely on extensions to the language. C itself (as in ISO C) does not cover inter-language stuff.

Andreas Wong · Accepted Answer · 2010-12-07 06:35:50Z

3

There's no pass by reference in C, everything is by value or pointer-to-address by value

edited Dec 7, 2010 at 6:35

answered Dec 7, 2010 at 6:30

Andreas Wong

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Comments

saurabh kabra · Accepted Answer · 2011-10-11 19:41:53Z

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call by reference is not applicable in c. As in c we can't create alias of any variable,so eiher call by value or call by pointer mechanism is supported here..

answered Oct 11, 2011 at 19:41

saurabh kabra

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