GATE | GATE-IT-2004 | Question 61

#include <stdio.h>
typedef struct 
{
    char *a;
    char *b;
} t;
void f1(t s);
void f2(t *p);
main()
{
    static t s = {\"A\", \"B\"};
    printf (\"%s %s\\n\", s.a, s.b);
    f1(s);
    printf (\"%s %s\\n\", s.a, s.b);
    f2(&s);
}
void f1(t s)
{
    s.a = \"U\";
    s.b = \"V\";
    printf (\"%s %s\\n\", s.a, s.b);
    return;
}
void f2(t *p)
{
    p -> a  = \"V\";
    p -> b = \"W\";
    printf(\"%s %s\\n\", p -> a, p -> b);
    return;
}