What happens here? sizeof(short_int_variable + char_variable)

Question

#include 
 int main()        
{

           short int i = 20;

            char c = 97;

            printf(\"%d, %d, %d\\n\", sizeof(i), sizeof(c), s         


        

Answer 1

As others have told, sizeof is computed at compile-time.

Here, value of the expression c + i integer, as c and i are promoted (integral promotion) to int and thus

sizeof( c + i )

gives you 4 bytes on 32-bit machine..