size of "stuff" without sizeof operator

[prasenjit_das]

hi all
how to find the size of int without using sizof operator
thanks in advance

[zeroliken]

I think that integers are 4 bytes long

[DJSAN10]

INT_MAX in limits.h gives maximum value of integer

[subith86]

A tricky way, may not be the best way. Here it is:

#include <iostream>

using namespace std;

int main()
{
    int a[2] = {1,5};
    long addr1 = (long)(&a[0]);
    long addr2 = (long)(&a[1]);
    cout<<(addr2 - addr1)<<endl;
    return 0;
}

take absolute value of addr2-addr1 inorder to avoid a negative answer.

[prasenjit_das]

hi all,
How to find size of structure without size off operator..using c
thanks in advance

[prasenjit_das]

hi All,
how i get the size of union without sizeof operator usin c
thanks in advance

[thines01]

http://groups.google.com/group/programming-puzzles/browse_thread/thread/f239408149871517?pli=1

[Ali_2101]

#include<iostream>
using namespace std;
union test
{
        int i;
        float j;
        double k;
};

int main()
{
        test obj1;
        cout<<sizeof(obj1)<<endl;
        cout<<(int)(&obj1 + 1) - (int)(&obj1)<<endl;
        return 0;
}

[Ali_2101]

int i;
cout<<(long)(&i +1) - (long)(&i)