C Language MCQ - English
Which of the following is not a valid variable name declaration?
int _a3;
int a_3;
int 3_a;
int _3a
Answer : C
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1) Which of following is not a valid name for a C variable?
2) A constant cannot be used except:
For assigning initial value to a variable
With ++ operator
As a formal argument
On LHS of an assignment operator
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3) What is the problem in following variable declaration?
float 3Bedroom-Hall-Kitchen?;
The variable name begins with an integer
The special character ‘-‘
The special character ‘?’
All of the mentioned
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4) Which of the following is not a valid variable name declaration?
5) Which of the following is true for variable names in C?
They can contain alphanumeric characters as well as special characters
It is not an error to declare a variable to be one of the keywords(like goto, static)
Variable names cannot start with a digit
Variable can be of any length
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