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

Do You Like This? Please take 5 seconds to share with your firends.