fprintf variable or string

Question

I think I might be digging into this too deep but I am curious if there really is any difference between using fprintf with a variable or not? Other than the memory usage of x in this case.

fprintf(stderr,"%d", 1);

vs

int x = 1;

fprintf(stderr,"%d", x);

The memory usage is the same. The compiler translates the code beforehand to be better. You don't ever have to manually optimize. — brunch875
– brunch875, Commented Oct 13, 2015 at 17:15
@brunch875 not necessarily... Optimization is not required to be implemented. — Eugene Sh.
– Eugene Sh., Commented Oct 13, 2015 at 17:16
Expressions are always evaluated, and both 1 and x are evaluated to the same. — teppic
– teppic, Commented Oct 13, 2015 at 17:31

dbush · Accepted Answer · 2015-10-13 17:11:52Z

3

There's no difference. Both x and 1 are of type int, so there is no difference between the two as far as printf is concerned.

answered Oct 13, 2015 at 17:11

dbush

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1 Comment

Weather Vane Over a year ago

Yes, in both cases an int value is supplied as an argument and printf() won't know whether it was from a variable or an immediate value.

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