How to determine size of variable without size of operator?

[dilip_devaraj]

C

how to determine size of a variable without using sizeof operator

 

[amiralib]

C

I think in C++ we can use calass and its easy to use.
is it tru?

 

[jonw0224]

Re: C

Interesting question.

I would write the following code to find the size of an integer in bytes (assuming no sizeof command and byte = 8 bits):

int i = 1;
int count = 1;
while (i <<= 8)
{
    count++;
}
//count should contain the size of the integer i in bytes.
//don't try to do this with doubles.

In general, using the sizeof operator is a much better idea.

-jonathan