C Language MCQ - Online Programming Quiz

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

1. Monitor
2. Function
3. Program
4. Structure

Show/Hide Answer

Answer = B 

2) Recursion is sometimes called ?

1. Circular definition
2. Complex definition
3. Procedure
4. Union

Show/Hide Answer

Answer =A

3) The directive that can be used to test whether an expression evaluates to a nonzero value or not is  ?

1. #if
2. #elif
3. #endif
4. #exit

Show/Hide Answer

Answer = A

4) The number of arguments supplied from the command line, by conversion is known as ?

1. arg c
2. arg v
3. #define
4. #include

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Answer = A

5) The expression X=4+2%-8 evaluates ?

1. -6
2. 6
3. 4
4. None

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Answer =B

6) Determine which of the following is valid character constant ?

1. '//'
2. '\0'
3. 'xyz'
4. '\052'

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Answer = A

7) Given the statement , maruti.engine.bolts=25 . Which of the following is true?

1. Structure bolts is nested within structure  engine
2. Structure engine is nested within structure maruti
3. Structure maruti is nested within structure engine
4. Structure maruti nested within structure bolts

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Answer =B

8) To access a structure element using a pointer, ......... operator is used?

1. dot ( . )
2. pointer ( & )
3. pointer ( * )
4. arrow ( -> )

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Answer =D

9) The ........ operator is a technique to forcefully convert one data type to the other ?

1. Cast
2. Conversion
3. Type
4. Uniary

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Answer = A

10) Which of the following numerical value is invalid constant ?

1. assignment operator
2. relational operator
3. logical operator
4. bitwise shift operator

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Answer = D

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Online C Programming Language Quiz

1) << Operator is used for  ?

1. Right Shifting
2. Left Shifting
3. Bitwise Shifting
4. Bitwise Complement

Show/Hide Answer

Answer = B

2) The value that follows the keyword CASE may only be ?

1. Constant
2. Variable
3. Semicolon
4. number

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Answer = A

3) The machine registers are sometimes called ?

1. Local Variables
2. Global Variables
3. Accumulators
4. Static variable

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Answer = A

4) An array of pointer is same as ?

1. pointer to array
2. pointer to pointer
3. pointer to function
4. pointer to structure

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Answer =B

5) scanf( ) function can be used for reading ?

1. double character
2. single character
3. multiple character
4. no character

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Answer = C

6) C allows three way transfer of control with the help of ?

1. unary operator
2. relational operator
3. ternary operator
4. comparison operator

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Answer =C

7) The statement that transfer control to the beinning of the loop is called ?

1. break statement
2. exit statement
3. continue statement
4. goto statement

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Answer = C

8) The number of arguments supplied from the command line, by convention, is known as ?

1. arg c
2. arg v
3. #define
4. #include

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Answer = A

9) If an array is used as function argument, the array is passed ?

1. by value.
2. by reference
3. by name
4. the array can not be used as function argument

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Answer = B

10) The function fprintf is used in a program ?

1. When too many printf calls have been already used in the program.
2. In place of printf, since printf uses more memory
3. When the output is to be printed on to a file.
4. When the type of variables to be printed are not known before.

Show/Hide Answer

Answer = C

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C Programming Language Objective Type Questions With Answers

Multiple choice and objective type questions base on the switch control structure of C language.  

1) When we use the case control structure ?

1. To choose one from multiple alternatives
2. To switch from one instruction to another
3. To make the execution fast
4. None of above

Show/Hide Answer

Answer = A

2) The case keyword is followed by ?

1. Float values
2. Character values
3. integer values
4. Both b and c

Show/Hide Answer

Answer = D

3) What will be the output of following code ?
   #include<stdio.h>
   void main( )
   {
        char suite =3;
        switch(suite)
        {
               case 1: 
                        printf("ALL QUIZ");
               case 2:
                        printf("All quiz is great");
               default:
                        printf("All quiz contains MCQs");
         }
         printf("Are you like All quiz ?");
   }
     

1. ALL QUIZ
2. All quiz is great
3. All quiz contains MCQs
4. All quiz is great Are you like Al quiz ?

Show/Hide Answer

Answer = D 

Explanation: Because the condition within the switch does not match any case so the default block will be executed. After then the control will be transferred to out of the switch and print statement will be executed.
4) What will be the output of following code ?
       void main( )
       {
            int c=3;
            switch(c)
            {
                case '3':
                      printf("Hi");
                      break;
                case 3:
                      printf("Hello");
                      break;
                 default:
                      printf("How r u ?");
            }
       }
                
 

1. Hi
2. Hello
3. How r u ?
4. None of above

Show/Hide Answer

Answer =  B

5) What will be the output of following program ?
       void main( )
       {
          int 1=3;
          switch(i)
          {
               case 0:
                    printf("I am here");
               case 1+0:
                    printf("I m in second case");
               case 4/2:
                    printf("I m in third case");
               case 8%5:
                    printf("Good bye");
           }
        } 

1. All case statements will be executed
2. I am here
3. Good bye
4. I am in third case

Show/Hide Answer

Answer = C 

6) What will be the output of following ?
            void main( )
            {
                  int suite =1;
                  switch(suite);
                 {
                       case 0:
                             printf("Its morning time");
                       case 1: 
                             printf("Its evening time");
                 }
            } 

1. Error
2. Its morning time
3. Its evening time
4. None of above

Show/Hide Answer

Answer = A 
Explanation: The code will generate an error that the case is outside switch. It is because of the semicolon after the switch statement.

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C Language Multiple Choice Questions - Control Structure

 Following are the multiple choice questions and answers on C language Control structure that includes decision, Looping and jumping control structure.

1) What will be the output of following program ?
        #include<stdio.h>
        int main( )
        {
             int a=300,b,c;
             if(a>=400)
                 b=300;
                 c=200;
                    printf("%d,%d\n",b,c);
             return 0;
        } 

1. Garbage value, Garbage Value
2. 300,200
3. 200,300
4. Garbage value,200

Show/Hide Answer

Answer = D 
Explanation: As the condition within the if statement is false so the value of b will not be initialized so it will print the garbage value and c is initialized to 200 so the output will be Garbage,200

2) What will be the output of following code ?
      #include<stdio.h>
      int main( )
      {
          int x=10,y=20;
          if(x = = y)
               printf("%d%d",x,y);
         return 0;
      } 

1. Garbage values
2. Raise an error
3. Prints Nothing
4. None of above

Show/Hide Answer

Answer = C 
Explanation:As the condition of if statement is not true, so the statement immediately after if that is print statement will not be executed and the code prints nothing.

3)  Give the output of following code ?
      #include<stdio.h>
      int main( )
     {
          int x=3;
          float y=3.0;
          if(x = = y)
                printf(" x and y are equal");
         else
                printf(" x and y are not equal");
     } 

1. x and y are equal
2. x and y are not equal
3. x and y are same
4. None of above

Show/Hide Answer

Answer = A

4) What will be the output of code ?
      #include<stdio.h>
      int main( )
      {
             int x=3,y,z;
             y=x=10;
             z=x<10;
             printf("x=%dy=%dz=%d\n",x,y,z);
             return 0;
       } 

1. 10,10,10
2. 10,10,0
3. 0,0,0
4. 0,10,10

Show/Hide Answer

Answer = B

5) What will be the output ?
         #include<stdio.h>
         int main( )
         {
              int k=35;
              printf("%d%d%d",k==35,k=50,k>40);
         } 

1. 35,50,40
2. 0,50,0
3. 0,0,0
4. 1,1,1

Show/Hide Answer

Answer =B

6) Which of the following statement is used to take the control to the beginning of the loop ?

1. exit
2. break
3. continue
4. None of these

Show/Hide Answer

Answer = C

7) A do - while loop is useful when we want that the statement within the loop must be executed ?

1. only once
2. at least once
3. more than once
4. None of above

Show/Hide Answer

Answer = B

8) What will the output of following program ?
    #include<stdio.h>
    void main( )
    {
         int i=0;
         for(;i;)
            printf("Allquiz");
    } 

1. Prints Nothing
2. Raise an error
3. Garbage value
4. Allquiz

Show/Hide Answer

Answer = A

9) What will be the output of following program ?
      #include<stdio.h>
      void main( )
      { 
           int i;
           for(i=1;i<=5;printf("%d",i));
               i++
       }
          

1. Error
2. Garbage values
3. 1 to 5
4. Infinite loop

Show/Hide Answer

Answer =D

10) What will be the output of following program ?
           #include<stdio.h>
           int main( )
           {
               int x=4;
               while(x==1)
               {
                    x=x-1;
                    printf("%d",x);
                    x--;
               }
            } 

1. 4
2. 1,2,3,4
3. Prints Nothing
4. None of above

Show/Hide Answer

Answer =C

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C Language Multiple Choice Questions And Answers - Basic Concepts

Multiple choice questions and answers with explanation on C language. The questions are based on the basic concepts of C language like keywords, Expressions etc.

1) What will be the output of following program ?
      #include<stdio.h>
       int main( )
       {
             int i=2,j=3,k,l;
             float a,b;
             k = i/j * j;
             l =  j/i * j;
             a = i/j * j;
             b = j/i * i;
             printf("%d %d%f%f\n",k,l,a,b);
             return 0;
       } 

1. 3, 0, 0, 0
2. 0, 3, 0.000000, 2.000000
3. 0,0,0,0
4. Error

Show/Hide Answer

Answer = B
Explanation: As K and L are integer variables so it prints the integer value as result and a and b are float variable, so float value will be print as result.

2) What will be the output of following program ?
          #incllude<stdio.h>
          int main( )
          {
              int a,b;
              a = -3 - - 25;
              b = -3 - - (-3);
              printf("a=%d b=%d\n",a,b);
              return 0;
          }
  

1. a = 22  b = -6
2. a = -6  b = 22
3. a =  3   b = 3
4. No Output

Show/Hide Answer

Answer = A 
Explanation:No Explanation

3) What will be the output of following program ?
           #include<stdio.h>
           int main( )
           { 
                 float a=5,b=2;
                 int c,d;
                 c =a%d;
                 d =a/2;
                 printf("%d\n",d);
                 return 0;
           } 

1. 3
2. 2
3. Error
4. None of above

Show/Hide Answer

Answer = C 
Explanation: Program will give the error : Illegal use of floating point. The statement c = a%b will give the error.

4)  What will be the output of program ?
       #include<stdio.h>
       int main( )
       {
           printf("nn /n/n nn/n");
           return 0;
       } 

1. Nothing
2. nn /n/n nn
3. nn /n/n
4. Error

Show/Hide Answer

Answer = B 
Explanation: No Explanation

5)  What will be the output of program ?
         #include<stdio.h>
         int main( )
         {
                int a,b;
               printf("Enter two values of a and b");
               scanf("%d%d",&a,&b);
               printf("a=%d b=%d"a,b);
               return 0;
         }

1. a = 0  b = 0
2. a = 1  b = 1
3. Values you entered
4. None of above

Show/Hide Answer

Answer = C 
Explanation: No Explanation

6) A character variable can at a time store  ?

1. 1 character
2. 8 character
3. 254 character
4. None of above

Show/Hide Answer

Answer = A 
Explanation: No Explanation

7) The maximum value that an integer constant can have is ?

1. -32767
2. 32767
3. 1.7014e + 38
4. -1.7014e + 38

Show/Hide Answer

Answer = B 
Explanation: The range of an integer number is -32767 - 32767

8)  Which of the following is false in C ?

1. Keywords cannot be used as variable names
2. Variable names can contain a digit
3. Variable names do not contain a blank space
4. Capital letters can be used in variable names

Show/Hide Answer

Answer = A 
Explanation: Keywords can be used as variable names but by doing this it creates confusion

9) On which if the following operator can % operator NOT be used ?

1. int variable
2. float variable
3. int constant
4. All of above

Show/Hide Answer

Answer = B 
Explanation: No Explanation

10) A C variable cannot start with ?

1. An alphabet
2. A number
3. A special symbol other that underscore
4. Both B and C

Show/Hide Answer

Answer = D 
Explanation: No Explanation

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Multiple Choice Questions On C Language - Set 2

Following are the multiple choice questions on C Language with answers. Following are the important questions for competitive exams point of view. Appropriate explanations are also given with the answers.

1) Which of the following is not true in context of C language ?

1. It is array of characters
2. Last character of character array is always \0
3. C inserts the null character automatically
4. Any string in C can be read by the function getchar()

Show/Hide Answer

Answer =  B and C
Explanation: No Explanation 

2)  Which of the following operations can not be perform on pointers in C ?

1. Addition of two pointers
2. Subtraction of a number from a pointer
3. Subtraction of one pointer from another
4. Addition of a number to a pointer

Show/Hide Answer

Answer = A
Explanation: No Explanation

3) What will be the output of following program ?
             main( )
            {
                   static char a[]="BOMBAY"
                   char *b="BOMBAY";
                   printf("\n%d%d",size of(a),size of (b));
            } 

1. a=7, b=7
2. a=7, b=2
3. a=2, b=7
4. a=7, b=0

Show/Hide Answer

Answer = C
Explanation: No Explanation

4) What is the output of  C statement 7.5 % 3 ?

1. 1.5
2. 1
3. No output
4. Error

Show/Hide Answer

Answer = D
Explanation: No Explanation 

5) Any program in C has access to three standard files?

1. standard input file, standard output file, standard error file
2. stdin, stdout, stderr
3. keywords, screen, stderr
4. All of above
5. None of above

Show/Hide Answer

Answer = B
Explanation: No Explanation 

6) An identifier in C  ?

1. is a name of thing such as variable and function
2. is made up of letters, numerals and the underscore
3. can contain both uppercase and lowercase letters
4. All of above
5. None of above

Show/Hide Answer

Answer = D
Explanation:No  Explanation 

7) The single character input/output functions are  ?

1. scanf( ) and printf( )
2. getchar( ) and printf( )
3. scanf( ) and putchar( )
4. getchar( ) and putchar( )
5. None of above

Show/Hide Answer

Answer = D
Explanation: No Explanation 

8) Precedence determines which operator ?

1. is evaluated first
2. is most important
3. is fastest 
4. Operates on the largest number
5. None of above

Show/Hide Answer

Answer = A
Explanation: No Explanation 

9) In C, the NULL statement which does nothing is just ?

1. a.,
2. ;
3. :
4. .

Show/Hide Answer

Answer = B
Explanation:No Explanation 

10) The two operators && and || are ?

1. arithmetic operators
2. equality operators
3. logical operators
4. relational operators
5. None of above

Show/Hide Answer

Answer = D 
Explanation: No Explanation 

Tags : C Language multiple choice questions with answers, C Language MCQs, Objective type questions on C Language with answers, Objective type questions on C Language, Quiz questions on C Language, Operating system MCQ, Multiple choice questions On C Language, UGC-NET test preperation, Computer subjects quiz

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Multiple Choice Questions In C With Answers

1) The Conditional Compilation  ?

1. It is taken care of by the compiler
2. It is setting the compiler options conditionally
3. It is compiling a program based on condition
4. None of Above

Show/Hide Answer

Answer = C 

2) Originally C was developed as ?

1. System Programming Language
2. General Purpose Language
3. Data Processing Language
4. None of Above

Show/Hide Answer

Answer = A

3) Minimum number of temporary variable needed to swap the contents of 2 variable is ?

1. 1
2. 2
3. 3
4. 0

Show/Hide Answer

Answer =D

4)*ptr++ is equivalent to ?

1. ptr++
2. *ptr
3. ++*ptr
4. None of Above

Show/Hide Answer

Answer =  D

5) Expression C=i++ Causes ?

1. Value of i is assigned to C and then I is incremented by 1
2. i to be incremented by 1, and then value of i assigned to C
3. Value of i assigned to C
4. i to be incremented by 1

Show/Hide Answer

Answer = A

6) Declaration int *(*p) int(*a)(i) is ?

1. A pointer to function that accepts an integer argument and returns an integer
2. A pointer to a, which returns an integer
3. A pointer to subroutine, which returns result of evaluation
4. None of Above

Show/Hide Answer

Answer = A

7) Null pointer and UN-initialized pointers are same ?

1. True
2. False
3. Varies from program to program
4. None of Above

Show/Hide Answer

Answer = B

8) In which header file Null macro is defined ?

1. stdio.h and stddeth
2. Iostream.h
3. string.h
4. preprocessor

Show/Hide Answer

Answer = A 

9) Null pointer is ?

1. A pointer which does not point anywhere
2. Pointer defined with name Null
3. A pointer that returns 0 values
4. None of Above

Show/Hide Answer

Answer = A

10) Null macro is ?

1. A macro with name Null
2. A macro which represents Null pointer
3. A macro defined with no name
4. None of Above

Show/Hide Answer

Answer = B

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