111. Which of the following is not a valid C variable name?

1. 1. int $main;

   
   
   

   2. int var;

   
   
   

   3. float price;

   
   
   

   4. int num;

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: A

   Since only underscore and no other special character is allowed in a variable name, it results in an error.

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112. Variable name resolution (number of significant characters for the uniqueness of variable) depends on ___________.

1. 1. Assemblers and loaders implementations

   
   
   

   2. C language

   
   
   

   3. Compiler and linker implementations

   
   
   

   4. All of above

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: C

   It depends on the standard to which compiler and linkers are adhering.

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113. All keywords in C are in ____________.

1. 1. CamelCase letters

   
   
   

   2. LowerCase letters

   
   
   

   3. UpperCase letters

   
   
   

   4. All of above

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   LowerCase letters

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114. Why do variable names beginning with the underscore is not encouraged?

1. 1. To avoid conflicts with environment variables of an operating system

   
   
   

   2. It is not standardized

   
   
   

   3. To avoid conflicts since assemblers and loaders use such names

   
   
   

   4. To avoid conflicts since library routines use such names

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: D

   To avoid conflicts since library routines use such names

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115. Which of the following is not a valid variable name declaration?

1. 1. int _12c

   
   
   

   2. int 12_c;

   
   
   

   3. int c_12;

   
   
   

   4. int _c12;

   
   
   

   5. None of these

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   Variable name cannot start with a digit.

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