101. What will be the output of the following C code?
     

     #include <stdio.h>
         void fun(const int *);
         int main()
         {
             const int k = 12;
             printf("%d ", k);
             fun(&k);
             printf("%d", k);
      
         }
         void fun(const int *k)
         {
             *k = 21;
         }
     

1. 1. 12 21

   
   
   

   2. 21 12

   
   
   

   3. Runtime Error

   
   
   

   4. Compilation Error

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   Cannot change a const type value.

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102. Which of the following cannot be a variable name in C?

1. 1. export

   
   
   

   2. friend

   
   
   

   3. volatile

   
   
   

   4. true

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   volatile is C keyword.

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103. What will be the output of the following C code?
     

      #include <stdio.h>
         int main()
         {
             int Eighteen = 18;
             int eighteen = 15;
             printf("%d", eighteen);
             return 0;
         }
     

1. 1. 18

   
   
   

   2. Compilation Error

   
   
   

   3. 15

   
   
   

   4. Runtime Error

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   Variable names Eighteen and eighteen are both distinct as C is case sensitive.

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104. What is the problem in following variable declaration?
     

     float 2B-H-K?;
     

1. 1. The special character ‘-‘

   
   
   

   2. The special character ‘?’

   
   
   

   3. The variable name begins with an integer

   
   
   

   4. All of above

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   A variable name cannot start with an integer, along with that the C compiler interprets the ‘-‘ and ‘?’ as a minus operator and a question mark operator respectively.

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105. What will happen if the following C code is executed?
     

     #include <stdio.h>
         int main()
         {
             int var = 15;
             printf("%d", var);
             return 0;
         }
     

1. 1. 10

   
   
   

   2. 12

   
   
   

   3. 15

   
   
   

   4. Compilation Error

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   It will run without any error and prints 15.

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