sizeof long double and precision not matching?

Question

Consider the following C code:

#include 
int main(int argc, char* argv[]) 
{
    const long double ld = 0.12345678901234567890123456789012345L         


        

Answer 1

The sizeof operator returns the size in bytes of the data type. The floating point format types are not really comparable to the byte size of the data type, other that bigger size usually means better precision.