#include <stdio.h>

int main (void)
{
        float a = 3.14;
        float b = 3.14158853;

        printf ("a : 0x%08x\t%d\nb : 0x%08x\t%d\n", a, sizeof(a),  b, sizeof (b));

        return 0;
}

------------------------------------------------------------------------------------
cmd@n0ne:~$ vi helpermaster.c; gcc -Wall helpermaster.c -o helpermaster && ./helpermaster
helpermaster.c: In function 'main':
helpermaster.c:8: warning: format '%08x' expects type 'unsigned int', but argument 2 has type 'double'
helpermaster.c:8: warning: format '%08x' expects type 'unsigned int', but argument 4 has type 'double'
a : 0x60000000  1074339512
b : 0x00000004  536870912