Structure and Union
practice.

User-defined data type can be derived by . . . . . . . .

What will be the output of the following C code?

#include <stdio.h>
struct student
{
    int no;
    char name[20];
};
void main()
{
    student s;
    s.no = 8;
    printf("hello");
}

Which of the following are themselves a collection of different data types?

What will be the output of the following C code?

#include <stdio.h>
struct point
{
    int x;
    int y;
};
void foo(struct point*);
int main()
{
    struct point p1[] = {1, 2, 3, 4, 5};
    foo(p1);
}
void foo(struct point p[])
{
    printf("%d %d\n", p->x, (p + 2).y);
}

What will be the output of the following C code?

#include <stdio.h>
typedef struct student
{
    char *a;
}stu;
void main()
{
    struct student s;
    s.a = "hey";
    printf("%s", s.a);
}

What will be the output of the following C code?

#include <stdio.h>
struct p
{
    char x : 2;
    int y : 2;
};
int main()
{
    struct p p;
    p.x = 2;
    p.y = 1;
    p.x = p.x & p.y;
    printf("%d\n", p.x);
}

What will be the output of the following C code?

#include <stdio.h>
typedef struct p *q;
int main()
{
    struct p
    {
        int x;
        char y;
        q ptr;
    };
    struct p p = {1, 2, &p};
    printf("%d\n", p.ptr->x);
    return 0;
}

What will be the output of the following C code?

#include <stdio.h>
union u
{
    struct
    {
        unsigned char x : 2;
        unsigned int y : 2;
    }p;
    int x;
};
int main()
{
    union u u.p.x = 2;
    printf("%d\n", u.p.x);
}

What will be the output of the following C code?

#include <stdio.h>
struct p
{
    unsigned int x : 7;
    unsigned int y : 2;
};
int main()
{
    struct p p;
    p.x = 110;
    p.y = 2;
    printf("%d\n", p.x);
}

Which of the following technique is faster for travelling in binary trees?

What will be the output of the following C code?

#include <stdio.h>
struct point
{
    int x;
    int y;
};
void foo(struct point*);
int main()
{
    struct point p1[] = {1, 2, 3, 4, 5};
    foo(p1);
}
void foo(struct point p[])
{
    printf("%d %d\n", p->x, (p + 2)->y);
}

What will be the output of the following C code?

#include <stdio.h>
struct student
{
    char a[];
};
void main()
{
    struct student s;
    printf("%d", sizeof(struct student));
}

Which function is responsible for searching in the table? (For #define IN 1, the name IN and replacement text 1 are stored in a "table")

Which is the correct syntax to use typedef for struct?

What will be the output of the following C code?

#include <stdio.h>
struct point
{
    int x;
    int y;
};
struct notpoint
{
    int x;
    int y;
};
struct point foo();
int main()
{
    struct point p = {1};
    struct notpoint p1 = {2, 3};
    p1 = foo();
    printf("%d\n", p1.x);
}
struct point foo()
{
    struct point temp = {1, 2};
    return temp;
}

What will be the output of the following C code?

#include <stdio.h>
struct student
{
    char *name;
};
void main()
{
    struct student s[2], r[2];
    s[1] = s[0] = "alan";
    printf("%s%s", s[0].name, s[1].name);
}

What will be the output of the following C code?

#include <stdio.h>
int main()
{
    struct p
    {
        char *name;
        struct p *next;
    };
    struct p p, q;
    p.name = "xyz";
    p.next = NULL;
    ptrary[0] = &p;
    strcpy(q.name, p.name);
    ptrary[1] = &q;
    printf("%s\n", ptrary[1]->name);
    return 0;
}

What will be the output of the following C code?

#include <stdio.h>
struct student
{
    char a[5];
};
void main()
{
    struct student s[] = {"hi", "hey"};
    printf("%c", s[0].a[1]);
}

What will be the output of the following C code? (Assuming size of char = 1, int = 4, double = 8)

#include <stdio.h>
union utemp
{
    int a;
    double b;
    char c;
}u;
int main()
{
    u.c = 'A';
    u.a = 1;
    printf("%d", sizeof(u));
}

What will be the output of the following C code?

#include <stdio.h>
union
{
    int x;
    char y;
}p;
int main()
{
    p.x = 10;
    printf("%d\n", sizeof(p));
}