1 reply to this topic

[novice]

hello guys, i have a small confusion with regards to the sizeof operator..

I tried out this code as a C program {some filename.c} and the output observed was 1, 4

#include<stdio.h>

int main()

{

    char ch='A';

    printf("%d%d",sizeof(ch),sizeof('A'));

       

}

then i tried the same code as a C++ program {some filename.cpp}
{no other changes made... all i did was File --> Save As --> filename.cpp}

and to my surprise, the output was 1,1.

does this mean that C and C++ have different ways of handling sizeof operator ??

please clarify.

PS : i use Dev CPP on Windows XP.

[CPD]

It's not the sizeof operator, it's how C and C++ determine the size for character constants. In C a character constant has a type of int, and because that causes problems with C++'s enhanced static type checking, the type of a character constant was changed to char.

This is one of the places where C and C++ differ, but your results are expected and normal.