Question 1

A variable declared in a function can be used in main().

Accepted Answer

A) True 
B) False 
C) True if it is declared static 
D) None of the mentioned

Question 2

Which operators of the following have same precedence? P. "!=", Q. "+=", R. "<<="

Accepted Answer

A) P and Q 
B) Q and R 
C) P and R 
D) P, Q and R

Question 3

By default a real number is treated as a

Accepted Answer

A) float 
B) double 
C) long double 
D)  far double

Question 4

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

Accepted Answer

A) int __a3; 
B) int __3a; 
C) int __A3; 
D) None of the mentioned

Question 5

Which of the following typecasting is accepted by C?

Accepted Answer

A) Widening conversions 
B) Narrowing conversions 
C) Widening & Narrowing conversions 
D) None of the mentioned

Question 6

Are logical operator sequence points?

Accepted Answer

A) True 
B) False 
C) Depends on the compiler 
D) Depends on the standard

Question 7

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

Accepted Answer

A) Compiler and linker implementations 
B) Assemblers and loaders implementations 
C) C language 
D) None of the mentioned

Question 8

Which of the following is true for variable names in C?

Accepted Answer

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

Question 9

While swapping 2 no' what at precautions to be taken care? b = (b / a); a = a * b; b = a / b;

Accepted Answer

A) Data type should be either of short, int and long 
B) Data type should be either of float and double 
C) All data types are accepted except for (char *) 
D) This code doesn't swap 2 numbers

Question 10

In the standard library of C programming language, which of the following header file is designed for basic mathematical operations?

Accepted Answer

A) math.h 
B) conio.h 
C) dos.h 
D) stdio.h

Question 11

Which of the following declaration is not supported by C?

Accepted Answer

A) String str; 
B) char *str; 
C) float str = 3e2; 
D) Both String str; & float str = 3e2;

Question 12

When do you need to use type-conversions?

Accepted Answer

A) The value to be stored is beyond the max limit 
B) The value to be stored is in a form not supported by that data type 
C) To reduce the memory in use, relevant to the value 
D) All of the mentioned

Question 13

Which of the following data type will throw an error on modulus operation(%)?

Accepted Answer

A) char 
B) short 
C) int 
D) float

Question 14

Which data type is most suitable for storing a number 65000 in a 32-bit system?

Accepted Answer

A) signed short 
B) unsigned short 
C) long 
D) int

Question 15

Which of the following is not a pointer declaration?

Accepted Answer

A) char a[10]; 
B) char a[] = {'1', '2', '3', '4'}; 
C) char *str; 
D) char a;

Question 16

What is the type of the following assignment expression if x is of type float and y is of type int? y = x + y;

Accepted Answer

A) int 
B) float 
C) there is no type for an assignment expression 
D) double

Question 17

Which of the following statements should be used to obtain a remainder after dividing 3.14 by 2.1 ?

Accepted Answer

A) rem = 3.14 % 2.1; 
B) rem = modf(3.14, 2.1); 
C) rem = fmod(3.14, 2.1); 
D) Remainder cannot be obtain in floating point division.

Question 18

Which of the following is not an arithmetic operation?

Accepted Answer

A) a * = 10; 
B) a / = 10; 
C) a ! = 10; 
D) a % = 10;

Question 19

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

Accepted Answer

A) int _a3; 
B) int a_3; 
C) int 3_a; 
D) int _3a

Question 20

Which among the following is NOT a logical or relational operator?

Accepted Answer

A) != 
B) == 
C) =

Exam 1: Introduction to C Language

A variable declared in a function can be used in main() .

Which operators of the following have same precedence? P. "!=", Q. "+=", R. "<<="

By default a real number is treated as a

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

Which of the following typecasting is accepted by C?

Are logical operator sequence points?

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

Which of the following is true for variable names in C?

While swapping 2 no' what at precautions to be taken care? b = (b / a) ; a = a * b; b = a / b;

In the standard library of C programming language, which of the following header file is designed for basic mathematical operations?

Which of the following declaration is not supported by C?

When do you need to use type-conversions?

Which of the following data type will throw an error on modulus operation(%) ?

Which data type is most suitable for storing a number 65000 in a 32-bit system?

Which of the following is not a pointer declaration?

What is the type of the following assignment expression if x is of type float and y is of type int? y = x + y;

Which of the following statements should be used to obtain a remainder after dividing 3.14 by 2.1 ?

Which of the following is not an arithmetic operation?

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

Which among the following is NOT a logical or relational operator?