Variable in C Language - Quiz

In case of ordinary int variables

  • A no bit is reserved for sign
  • B rightmost bit is reserved for sign
  • C leftmost bit is reserved for sign
  • D None

Which of the following below is valid C keywords?
  • A null
  • B integer
  • C int
  • D None

Which keyword is used to declare a variable in C language?
  • A int
  • B var
  • C vari
  • D declare

What will be the output of the following program? 
 #include"stdio.h"
main()
{
/* assuming that the i is not defined in in any other file */	
 extern int i;
 i = 10 ;
 printf("%d", i) ;
}

  • A 10
  • B 0
  • C Compile time error
  • D Linker Error

Which one is not a c keyword
  • A auto
  • B extern
  • C register
  • D main

Which of the following is not a valid variable name declaration?
  • A #define PI 3.14
  • B float PI = 3.14;
  • C double PI = 3.14;
  • D int PI = 3.14;

What is the maximum length of a variable name in C language?
  • A 8 characters
  • B 16 characters
  • C 32 characters
  • D There is no limit

Which symbol is used for the assignment of a value to a variable in C language?
  • A ===
  • B ==
  • C =>
  • D =

Which of the following is correct for variable names in C?
  • A Variable names cannot start with a digit
  • B They can contain alphanumeric characters as well as special characters
  • C Variable can be of any length
  • D It is not an error to declare a variable to be one of the keywords(like goto, static)

Which of following is not a valid name for a C variable?
  • A newdelhi
  • B new_delhi
  • C new delhi
  • D none