Structure and Union - C Programming MCQ Questions and Answers Page-6 section-2

51.

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);
}

A. Compile time error

B. 1 0

C. 1 somegarbagevalue

D. undefined behaviour

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52.

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));
}

A. Compile time error

B. 8

C. 1

D. Varies

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53.
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")

A. findout(s);

B. lookup(s);

C. find(s);

D. lookfor(s);

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54.
Which is the correct syntax to use typedef for struct?

A.

typedef struct temp
{
    int a;
}TEMP;

B.

typedef struct
{
    int a;
 }TEMP;

C.

struct temp
{
    int a;
};
typedef struct temp TEMP;

D. All of the mentioned

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55.

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;
}

A. Compile time error

B. 1

C. 2

D. Undefined behaviour

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56.

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);
}

A. alan alan

B. Nothing

C. Compile time error

D. Varies

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57.

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;
}

A. Compile time error

B. Depends on the compiler

C. Undefined behaviour

D. xyz

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58.

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]);
}

A. h

B. i

C. e

D. y

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59.

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));
}

A. 1

B. 4

C. 8

D. 13

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60.

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));
}

A. Compile time error

B. sizeof(int) + sizeof(char)

C. Depends on the compiler

D. sizeof(int)

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51.
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); }`

Answer & Solution

52.
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)); }`

Answer & Solution

53.
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")

Answer & Solution

54.
Which is the correct syntax to use typedef for struct?

Answer & Solution

Answer & Solution

56.
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); }`

Answer & Solution

57.
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; }`

Answer & Solution

58.
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]); }`

Answer & Solution

59.
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)); }`

Answer & Solution

60.
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)); }`

Answer & Solution

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Structure and Union - C Programming MCQ Questions and Answers

51. 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); }

Answer & Solution

52. 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)); }

Answer & Solution

53. 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")

Answer & Solution

54. Which is the correct syntax to use typedef for struct?

Answer & Solution

Answer & Solution

56. 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); }

Answer & Solution

57. 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; }

Answer & Solution

58. 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]); }

Answer & Solution

59. 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)); }

Answer & Solution

60. 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)); }

Answer & Solution

Read More Section(Structure and Union)

51.
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); }`

52.
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)); }`

53.
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")

54.
Which is the correct syntax to use typedef for struct?

56.
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); }`

57.
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; }`

58.
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]); }`

59.
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)); }`

60.
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)); }`