New C Programming 38 Solved MCQ Question Answer 2021

 Question: 1. The output of the following code is:

void main()
{
int z, a = 5, b = 3; z = a * 2 + 26 % 3;
printf("%d", z); }

Option A. 10

Option B. 0

Option C. 12

Option D. None of the above

Question: 2. Which options shows the correct hierarchy of arithmetic operators

Option A. **, * or /, + or -

Option B. **, *, /, +, -

Option C. **< /< *< +<-

Option D. / or *, - or +

Question: 3. The output of the following code is:

void main() 
{
float a;
int x = 10, y = 3; a = x / y;
printf("%f", a); }

Option A. 3.999999

Option B. Error

Option C. 3

Option D. 3.000000

Question: 4. The output of the following code is:

void main() 
{
char a = 'B';
switch (a) 
{
case 'A' : printf("a"); 
case 'B' : printf("b");
default : printf("c");
}

Option A. B

Option B. b

Option C. bca

Option D. bc

Question: 5. The output of the following code is:

void main()
{ 
int a = 20;
printf("%d\t%d
", ++a, a);
}

Option A. 21 21

Option B. 20 21

Option C. 21 20

Option D. 20 20

Question: 6. How many times the following loop will execute?
for (a = 0; a < 4; a++)
printf("hello
");

Option A. 3

Option B. 4

Option C. 5

Option D. infinite

Question: 7. The output of the following code is:

void main() 
{
int a; 
int &b = a;
a=100; 
printf("b=%d\ta=%d
", b,a);
}

Option A. b=100 a=100

Option B. b=100 a=0

Option C. b=0 a=100

Option D. Error

Question: 8. The output of the following code is:

void main() 
{
int a = 0; 
while (a<=50) for(;;) if(++a % 50==0) break;
printf("a = %d", a); 
}

Option A. a = 100

Option B. a = 50

Option C. compilation error

Option D. runtime error

Question: 9. The output of the following code is:

int f(int a, int b); 
void main() 
{
int a = 12, b=154; 
printf("%d", f(a, b)); 
}
int f(int a, int b) 
{
if (a<b) return(f(b, a));
if(b==0) return(a);
return (f(b, a % b));
}

Option A. 2

Option B. 1

Option C. Compilation error

Option D. Runtime error

Question: 10. The output of the following code is:

void main() 
{
int a = 1, b=2; 
int *ip; 
ip=&a; 
b=*ip; 
printf("%d", b);
}

Option A. 2

Option B. 1

Option C. 100

Option D. 0

Question: 11. The output of the following code is:

void main() 
{ 
static int a = 1, b, c;
if (a>=2) b=2; c=3;
printf("%d\t%d", b,c); 
}

Option A. 2 3

Option B. 0 3

Option C. 0 0

Option D. 2 0

Question: 12. The output of the following code is:

#define sqr(x= x*x) 
main() 
{
int a = 10, b = 5; 
printf("%d, %d", sqr(a+b),sqr(++a));
}

Option A. 77, 121

Option B. 225, 121

Option C. 77< 144

Option D. Compilation error

Question: 13. struct stud
{
int roll;
char name[20];
float marks;
} *p;
What will be the byte size of p?

Option A. 24

Option B. 2

Option C. 26

Option D. None

Question: 14. The output of the following code is:

main() 
{ 
unsigned int a = 10; 
while (a>=10) 
{ 
int a; a-- ; 
} 
printf("%i", a); 
}

Option A. Infinite loop

Option B. 9

Option C. 0

Option D. None

Question: 15. The output of the following code is:

main() 
{ 
xyz: goto abc;
printf("Hello"); 
abc: printf("World");
goto xyz;
}

Option A. Infinite loop

Option B. Hello World

Option C. World Hello

Option D. Compilation error

Question: 16. The output of the following code is:

main() 
{
int a = 0; 
for (; i = 0; i++) 
printf("%d", a); 
}

Option A. 0

Option B. Nothing will be displayed

Option C. Infinite loop

Option D. None of the above

Question: 17. The output of the following code is:

void change (char *k) 
{
k="Hello";
return; 
} 
main() 
{ 
char *ch = "World";;
change(ch); 
printf("%s", ch); 
}

Option A. Hello

Option B. World

Option C. Compilation error

Option D. Hello World

Question: 18. Which of the following is not an infinite loop

Option A. int i =1;
while (1)
{i++;}

Option B. for( ; ; );

Option C. int true=0< false;
while (true)
{false = 1;}

Option D. int y, x = 0;
do
{y = x;}
while (x==0);

Question: 19. do-while loop is useful when we want the statements within the loop must be executed

Option A. Only once

Option B. At least once

Option C. More than Once

Option D. Any one of the above

Question: 20. Which of the following is not a preprocessor directive

Option A. #if

Option B. #elseif

Option C. #undef

Option D. #pragma

Question: 21. The output of the following code is:

main() 
{
int a = 5, b = 6; 
(a == b? printf("%d", a)); 
}

Option A. 0

Option B. 5

Option C. Error

Option D. None of the above

Question: 22. The output of the following code is:

main() 
{ 
int k, num = 30; 
k = (num > 5 ? (num <= 10 ? 100 : 200) : 500); 
printf("
%d", num); 
}

Option A. 200

Option B. 500

Option C. 30

Option D. Unpredictable

Question: 23. The output of the following code is:

main() 
{ 
void msg() 
{ 
printf("HELLO WORLD"); 
} 
}

Option A. HELLO WORLD

Option B. Error

Option C. None of the above

Option D. Null

Question: 24. The output of the following code is:

main() 
{ 
int sub[50]; 
for(i=0; i<=48;i++) 
{ 
sub[i]=i; 
printf("
%d", sub[i]);
}
}

Option A. 0 to 48 will be displayed

Option B. 48

Option C. 49

Option D. Compilation Error

Question: 25. The output of the following code is:

main() 
{
int a[10], i; 
for (i = 1; I <= 0; i++) 
{
scanf("%d", a[i]); 
printf("%d", a[i]); 
}
}

Option A. 10

Option B. Logical error

Option C. Runtime error

Option D. 1 to 10 will be displayed

Question: 26. Which of the following expressions is wrong

Option A. float a =123.56;

Option B. char ch ='T' * 'A';

Option C. char ch ='T' *20;

Option D. 3 +a = b;

Question: 27. strcat() function ----------------------- two strings.

Option A. delete

Option B. concatenate

Option C. compare

Option D. none of the above

Question: 28. A function to be called must be ended with a----------------

Option A. .

Option B. ?

Option C. ;

Option D. none of the above

Question: 29. The function fopen() on failure returns---------------------.

Option A. 0

Option B. NULL

Option C. 1

Option D. none of the above

Question: 30. The-------------------- statement helps immediate exit from any part of the loop

Option A. break

Option B. continue

Option C. exit

Option D. All of the above

Question: 31. The -------------------------- loop executes at least once.

Option A. for

Option B. while

Option C. do-while

Option D. while & do-while

Question: 32. char *s[10] defines an array of ------------------------

Option A. pointers to strings

Option B. string to pointer

Option C. both

Question: 33. A multidimensional array A[10][9] can store-------- number of elements

Option A. 91

Option B. 88

Option C. 90

Option D. 89

Question: 34. The size of signed integer is ------ bytes.

Option A. 4

Option B. 2

Option C. 8

Option D. 10

Question: 35. There are total ------ numbers of operators in 'C'.

Option A. 35

Option B. 45

Option C. 55

Option D. 40

Question: 36. ------ is the ternary operator

Option A. ?,-

Option B. ?,:

Option C. ++<--

Option D. none of the above

Question: 37. unsigned char has a range from 0 to ------------

Option A. 253

Option B. 254

Option C. 255

Option D. 256

Question: 38. If 'str' is a string of 7 characters, the statement printf("%4s", str); will display ------characters.

Option A. 4

Option B. 7

Option C. 6

Option D. 0

Answer Sheet

1	C
2	D
3	D
4	D
5	C
6	B
7	D
8	A
9	A
10	B
11	B
12	D
13	B
14	A
15	A
16	D
17	B
18	C
19	B
20	B
21	C
22	C
23	B
24	D
25	B
26	D
27	B
28	C
29	B
30	A
31	C
32	A
33	C
34	B
35	B
36	B
37	C
38	A