Interview Questions on Fundamental of C Language set-8

1) The control automatically passes the first statement after the loop in ..

A. Continue statement

B. Break statement

C. Switch statement

D. If statement


2) Which of the following is a scalar data type?

A. Float

B. Union

C. Array

D. Pointer


3) The given FOR loop is ..

for( ; ; ) { printf(" "); }

A. valid

B. invalid

C. indefinite

D. displays runtime error


4) In C, a union is ......

A. memory location

B. memory store

C. memory screen

D. memory space


5) The ......... statement causes immediate exit from the loop overriding the condition test ..

A. Exit

B. Break

C. Goto

D. None of the above


6) Pointers are of ..........

A. integer data type

B. character data type

C. unsigned integer data type

D. None of these


7) The keyword used to transfer control from a function back to the calling function is ...

A. switch

B. goto

C. go back

D. return


8) Identify the invalid pointer arithmetic ......

A. addition of float value to a pointer

B. comparison of pointers that do not point to the element of the same array

C. subtracting an integer from a pointer

D. assigning the value 0 to a pointer variable


9) In C, if you pass an array as an argument to a function, what actually gets passed?

A. Value of elements in array

B. First element of the array

C. Base address of the array

D. Address of the last element of array


10) Header file in C contain ......

A. compiler commands

B. library functions

C. header information of C programs

D. operators for files

11) Which of the following cannot be checked in a switch-case statement?

A. Character

B. Integer

C. Float

D. Enum


12) The printf() function returns which value when an error occurs?

A. Positive value

B. zero

C. Negative value

D. None of these


13) When array elements are passed to a function with their values, it is called as ...

A. end value

B. call by value

C. return value

D. first value


14) Which of the following is character oriented console I/O function?

A. getchar() and putchar()

B. gets() and puts()

C. scanf() and printf()

D. fgets() and fputs()


15) In the for loop structure there are .......... optional clauses.

A. one

B. two

C. three

D. four


16) Which header file is essential for using strcmp() function?

A. string.h

B. strings.h

C. text.h

D. strcmp.h


17) A multidimensional array can be expressed in terms of ...........

A. array of pointers rather than as pointers to a group of contiguous array

B. array without the group of contiguous array

C. data type arrays

D. qualifies of data types


18) The real constant in C can be expressed in which of the following forms?

A. fractional form only

B. exponential form only

C. ASCI form only

D. Both fractional and exponential forms


19) A structure ...

A. can be read as a single entity

B. cannot be read as a single entity

C. can be displayed as a single entity

D. has member variables that cannot be read individually


20) What will the function randomize() do?

A. returns a random number

B. returns a random number generator in the specified range

C. returns a random number generator with a random value based on time

D. return a random number with a given seed value

Answers:

1) B. Break statement

2) A. Float

3) D. displays runtime error

4) C. memory screen

5) B. Break

6) D. None of these

7) D. return

8) D. assigning the value 0 to a pointer variable

9) C. Base address of the array

10) B. library functions

11) C. Float

12) C. Negative value

13) B. call by value

14) A. getchar() and putchar()

15) C. three

16) A. string.h

17) A. array of pointers rather than as pointers to a group of contiguous array

18) D. Both fractional and exponential forms

19) A. can be read as a single entity

20) C. returns a random number generator with a random value based on time

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Solved MCQ on Fundamental of C Language set-7

1) 'C' allows a three way transfer of control with the help of

A. Unary Operator

B. Relational Operator

C. Ternary Operator

D. Comparison Operator


2) Operators have hierarchy. It is used to know which operator ....

A. is most important

B. is used first

C. is faster

D. operators on large numbers


3) The statement that transfers control to the beginning of the loop is called ..

A. break statement

B. exit statement

C. continue statement

D. goto statement


4) C programming language was developed by ..

A. Dennis Ritche

B. Ken Thompson

C. Bill Gates

D. Peter Norton


5) The value that follows the keyword CASE may only be

A. constants

B. variable

C. number

D. semicolon


6) In a C language 'a' represents ...

A. a digit

B. an integer

C. a character

D. a word


7) The statement which is used to terminate the control from the loop is

A. break

B. continue

C. goto

D. exit


8) The continue command cannot be used with ....

A. for

B. switch

C. do

D. while


9) A self contained block of statements that perform a coherent task of some kind is called a .

A. Monitor

B. Function

C. Program

D. Structure


10) Which among the following is a unconditional control structure?

A. do while

B. if else

C. goto

D. for


11) Recursion is sometimes called

A. Circular definition

B. Complex definition

C. Procedure

D. Union


12) Every program statement in a C program end with ...

A. semicolon

B. comma

C. full stop

D. slash


13) The loop in which the statements within the loop are executed at least once is called

A. do-while

B. while

C. for

D. goto


14) The maximum length allowed in specifying the name of a C variable is ........

A. 45

B. 31

C. 56

D. 78


15) The break statement causes an exit

A. Only from the innermost loop

B. Only from the innermost switch

C. From the innermost loop or switch

D. From the program


16) Which of the following is a unformatted console I/O function to get a string input?

A. puts

B. gets

C. clrscr

D. scanf


17) The operators << and >> are

A. assignment operator

B. relational operator

C. logical operator

D. bitwise shift operator


18) The operator & is used for ........

A. Bitwise AND

B. Bitwise OR

C. Logical AND

D. Logical OR


19) Which of the following is FALSE in C

A. Keywords can be used as variable names

B. Variable names can contain a digit

C. Variable names do not contain a blank space

D. Capital letters can be used in variable names


20) The operator && is an example of ........... operator.

A. assignment

B. increment

C. logical

D. relational

Answers:

1) C. Ternary Operator
2) B. is used first
3) C. continue statement
4) A. Dennis Ritche
5) A. constants
6) C. a character
7) A. break
8) D. while
9) B. Function
10) C. goto
11) A. Circular definition
12) A. semicolon
13) A. do-while
14) B. 31
15) C. From the innermost loop or switch
16) B. gets
17) D. bitwise shift operator
18) A. Bitwise AND
19) A. Keywords can be used as variable names
20) C. logical

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objective type questions in c programming language set-6

1. Which symbol is used as a statement terminator in C?

A) !

B) ~

C) #

D) ;


2. If the size of the array is less than the number of initializes then, ..........

A) extra values are being ignored

B) generates an error message

C) size of array is increased

D) size is neglected when values are given


3. In C, if you pass an array as an argument to a function, what actually gets passed?

A) Value of elements in array

B) First element of the array

C) Base address of the array

D) Address of the last element of array


4. How many times the following loop be executed? { .. ch='b'; while (ch>='a' && ch<=='z') ch++; }

A) 0

B) 25

C) 26

D) 1


5. If a=8 and b=15 then the statement x=(a>b) ? a:b;


A) assigns a value 8 to x

B) gives an error message

C) assigns a value 15 to x

D) assigns a value 7 to x


6. What is the output of the following code. int n=0, m=1; do { printf("%d", m); m++; } while (m<=n);

A) 0

B) 2

C) 1

D) 4


7. A C program contains the following declaration int i=8, j=5 what would be the value of following expression? abs(i-2*j)
A) 2

B) 4

C) 6

D) 8


8. The output of the following is . int a=75; printf("%d%%", a);

A) 75

B) 75%%

C) 75%

D) None of the above


9. How many times the following program would print ("abc")? main( ) { printf("\nabc"); main( ); }

A) Infinite number of times

B) 32767 times

C) 65535 times

D) Till the stack does not overflow


10. Which of the following is the correct usage of conditional operators used in C?

A) a>b?c=30:c=40;

B) a>b?c=30;

C) max=a>b?a>c?a:c:b>c?b:c

D) return (a>b)?(a:b)

Answers:

1. Which symbol is used as a statement terminator in C?

D) ;

2. If the size of the array is less than the number of initializes then, ..........

B) generates an error message

3. In C, if you pass an array as an argument to a function, what actually gets passed?

C) Base address of the array

4. How many times the following loop be executed? { .. ch='b'; while (ch>='a' && ch<=='z') ch++; }

B) 25

5. If a=8 and b=15 then the statement x=(a>b) ? a:b;

C) assigns a value 15 to x

6. What is the output of the following code. int n=0, m=1; do { printf("%d", m); m++; } while (m<=n);

C) 1

7. A C program contains the following declaration int i=8, j=5 what would be the value of following expression? abs(i-2*j)
A) 2

8. The output of the following is . int a=75; printf("%d%%", a);

D) None of the above

9. How many times the following program would print ("abc")? main( ) { printf("\nabc"); main( ); }

A) Infinite number of times

10. Which of the following is the correct usage of conditional operators used in C?

C) max=a>b?a>c?a:c:b>c?b:c

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Solved MCQ on C Programming Language set-5

1. What will be output of the following C program? #include int main() {int goto=5; printf("%d",goto); return 0;}

A) 5

B) 10

C) **

D) compilation error


2. Output of the following C program fragment is. x=5; y=x++; printf("%d %d", x,y);

A) 5, 6

B) 5, 5

C) 6, 5

D) 6, 6


3. What will be output of the following C program? #include int xyz=10; int main() { int xyz=20; printf("%d", xyz); return 0;}

A) 10

B) 20

C) 30

D) compilation error


4. Following program fragment. main(){ printf("%p\n", main( ) ); }

A) Prints the address of main function

B) Prints 0

C) Is an error

D) In an infinite loop


5. What will be output of the following program? #include int main() {int a=2, b=7, c=10; c=a==b; printf("%d",c); return 0;}

A) 0

B) 7

C) 10

D) 2


6. What is the output of the following program segment? main( ) { long i=65536; printf("%d\n", i); }

A) 0

B) 65536

C) -1

D) 65


7. What will be the output of the program? # include int main() {int a[5]={5,1,15,20,25}; int i, j, m; i=++a[1]; j=a[1]++; m=a[i++]; printf("%d, %d, %d", i,j,m); return0;}

A) 2, 1, 15

B) 1, 2, 5

C) 3, 2, 15

D) 2, 3, 20


8. What is the output of the following program segment? main( ) { int=1; do { printf("%d . . ", i); } while (i--); }

A) 0 . . 1 . .

B) 1 . . 0 . .

C) 0

D) -1


9. Output of the program below is. int i; main( ) { printf("%d", i); }

A) 1

B) 0

C) -1

D) Null


10. What will be the output of the following program? main( ) { int i=5; printf("%d", i=++i==6); }

A) 0

B) 7

C) 6

D) 1

Answers:

1. What will be output of the following C program? #include int main() {int goto=5; printf("%d",goto); return 0;}

A) 5

2. Output of the following C program fragment is. x=5; y=x++; printf("%d %d", x,y);

C) 6, 5

3. What will be output of the following C program? #include int xyz=10; int main() { int xyz=20; printf("%d", xyz); return 0;}

B) 20

4. Following program fragment. main(){ printf("%p\n", main( ) ); }

A) Prints the address of main function

5. What will be output of the following program? #include int main() {int a=2, b=7, c=10; c=a==b; printf("%d",c); return 0;}

A) 0

6. What is the output of the following program segment? main( ) { long i=65536; printf("%d\n", i); }

A) 0

7. What will be the output of the program? # include int main() {int a[5]={5,1,15,20,25}; int i, j, m; i=++a[1]; j=a[1]++; m=a[i++]; printf("%d, %d, %d", i,j,m); return0;}

C) 3, 2, 15

8. What is the output of the following program segment? main( ) { int=1; do { printf("%d . . ", i); } while (i--); }

B) 1 . . 0 . .

9. Output of the program below is. int i; main( ) { printf("%d", i); }

B) 0

10. What will be the output of the following program? main( ) { int i=5; printf("%d", i=++i==6); }

D) 1

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MCQ on C Programming With Answers set-4

1. 'C' is often called a ....

A) Object oriented language

B) High level language

C) Assembly language

D) Machine level language


2. Each C preprocessor directive begins with ....

A) #

B) include

C) main()

D) {


3. C allows arrays of greater than two dimensions, who will determine this?

A) programmer

B) compiler

C) parameter

D) None of the above


4. The << operator is used for

A) Right shifting

B) Left shifting

C) Bitwise shifting

D) Bitwise complement


5. Set of values of the same type, which have a single name followed by an index is called

A) function

B) structure

C) array

D) union


6. Which of the following header file is required for strcpy() function?

A) String.h

B) Strings.h

C) file.h

D) strcpy()


7. scanf() can be used for reading ...

A) double character

B) single character

C) multiple characters

D) no character


8. A variable which is visible only in the function in which it is defined is called

A) Static variable

B) auto variable

C) external variable

D) local variable


9. In the loop structure logical expression is checked at the ....................of the loop.

A) first

B) end

C) middle

D) second


10. If an array is used as function argument, the array is passed

A) by value

B) by reference

C) by name

D) the array cannot be used as function argument


11. If is necessary to declare the type of function in the calling program if

A) Function returns an integer

B) Function returns a non-integer value

C) Function is not defined in the same file

D) Function is called number of times


12. Which escape character can be used to begin a new line in C ........

A) \a

B) \m

C) \b

D) \n


13. Input/output function prototypes and macros are defined in which header file?

A) conio.h

B) stdlib.h

C) stdio.h

D) dos.h


14. What is the purpose of fflush() function?

A) flushes all streams and specified streams

B) flushes only specified stream

C) flushes input/output buffer

D) flushes file buffer


15. What does the following declaration mean?int(*ptr)[10].

A) ptr is array of pointers to 10 integers.

B) ptr is a pointer to an array of 10 integers

C) ptr is an array of 10 integers

D) ptr is an pointer to array

Answers:

1. 'C' is often called a ....

B) High level language

2. Each C preprocessor directive begins with ....

A) #

3. C allows arrays of greater than two dimensions, who will determine this?

B) compiler

4. The << operator is used for

B) Left shifting

5. Set of values of the same type, which have a single name followed by an index is called

C) array

6. Which of the following header file is required for strcpy() function?

A) String.h

7. scanf() can be used for reading ...

C) multiple characters

8. A variable which is visible only in the function in which it is defined is called

D) local variable

9. In the loop structure logical expression is checked at the ....................of the loop.

A) first

10. If an array is used as function argument, the array is passed

B) by reference

11. If is necessary to declare the type of function in the calling program if

B) Function returns a non-integer value

12. Which escape character can be used to begin a new line in C ........

D) \n

13. Input/output function prototypes and macros are defined in which header file?

C) stdio.h

14. What is the purpose of fflush() function?

A) flushes all streams and specified streams

15. What does the following declaration mean?int(*ptr)[10].

B) ptr is a pointer to an array of 10 integers

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Write a Program in C to Find if a Number is Present in a List or not

Here is a C program to find if a number is present in a list of N numbers or not.


In this program for loop is used to search a number from the list of numbers and array of numbers is used to insert numbers in a list.


If the searched number is matched with any number in the list it throws to print it is presented in the list and if the searched number is not matched with any number in the list it throws to print it is not presented in the list.

 A C Program to Find if a Number is Present in a List of N numbers or not

Steps:

1.  At first declare integers i, n, m, and array of integers a[10].
2. Print the message to enter how many elements want to insert and allow to insert.
3. Print the message to enter the elements in the array.
4. Use for loop to find out whether the given number is present in the list or not.
5. Print the message on the screen whether the given number is present in the list or not.

Code:

#include<stdio.h>
#include<conio.h>

void main()
{
	int i,n,m,flag=0; int a[10];
	clrscr();

	printf("How many elements you want to enter \n");
	scanf("%d",&n);

	printf("Enter element in the array \n");
	for (i=0; i<n; i++)
	scanf("%d", &a[i]);

	printf("Enter the element you want to search \n");
	scanf("%d", &m);

	for (i=0; i<n; i++)
		{
			if(a[i]==m)
			{
			flag=1;
			break;
			}
		}
	if(flag==0)
		printf("Not present");
	else
		printf("Present");
	getch();
}

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