C015Operators and Expressions • Arithmetic
Most ImportantEasy
Q1.What is the value of the expression 5 / 2 in C?
A
2.5
B
2
Correct answer
C
3
D
2.0
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Correct answers are highlighted in green
C016Operators and Expressions • Arithmetic
Most ImportantEasy
Q2.What is the value of 5 % 2 in C?
A
1
Correct answer
B
2
C
2.5
D
0
C018Operators and Expressions • Increment/Decrement
Most ImportantMedium
Q3.What is printed? int a = 5; printf("%d", a++);
A
5
Correct answer
B
6
C
4
D
error
C019Operators and Expressions • Increment/Decrement
Most ImportantMedium
Q4.What is printed? int a = 5; printf("%d", ++a);
A
5
B
6
Correct answer
C
4
D
error
C021Operators and Expressions • Logical
Most ImportantEasy
Q5.The logical AND operator in C is written as:
A
&
B
&&
Correct answer
C
AND
D
|
C022Operators and Expressions • Relational
Most ImportantEasy
Q6.What is the result of the expression (5 > 3) in C?
A
1
Correct answer
B
0
C
true
D
5
C025Operators and Expressions • Assignment
Most ImportantEasy
Q7.Which of the following is the ASSIGNMENT operator (not comparison)?
A
==
B
=
Correct answer
C
>=
D
!=
C026Operators and Expressions • Precedence
Most ImportantEasy
Q8.What is the value of a? a = 5 + 3 * 2;
A
16
B
11
Correct answer
C
13
D
10
C028Operators and Expressions • I/O
Most ImportantEasy
Q9.Which format specifier is used for a float value in printf()?
A
%d
B
%f
Correct answer
C
%c
D
%s
C030Operators and Expressions • Escape sequence
Most ImportantEasy
Q10.The escape sequence \n is used to:
A
insert a tab
B
move to a new line
Correct answer
C
insert a null character
D
ring a bell
C104Operators and Expressions • Compound assignment
Most ImportantEasy
Q11.The statement a += 5; is equivalent to:
A
a = 5;
B
a = a + 5;
Correct answer
C
a = a * 5;
D
a = 5 + 5;
C105Operators and Expressions • Logical
Most ImportantEasy
Q12.The logical NOT operator in C is:
A
!
Correct answer
B
&&
C
||
D
~
C110Operators and Expressions • Precedence
Most ImportantMedium
Q13.What is the value of 10 % 3 + 2 in C?
A
2
B
3
Correct answer
C
5
D
1
C111Operators and Expressions • Precedence
Most ImportantEasy
Q14.What is the value of 2 + 3 * 4 - 1 in C?
A
19
B
13
Correct answer
C
20
D
16
C118Operators and Expressions • Relational
Most ImportantEasy
Q15.What is the value of 5 == 5 in C?
A
0
B
1
Correct answer
C
5
D
error
C017Operators and Expressions • Arithmetic
ImportantMedium
Q16.The modulus operator % in C can be used with:
A
only float operands
B
only integer operands
Correct answer
C
both int and float
D
only char
C020Operators and Expressions • Precedence
ImportantMedium
Q17.Which operator has the HIGHEST precedence among the following?
A
+
B
*
Correct answer
C
=
D
||
C023Operators and Expressions • Conditional
ImportantMedium
Q18.The conditional (ternary) operator in C is written as:
A
? :
Correct answer
B
::
C
if..else
D
=>
C024Operators and Expressions • Conditional
ImportantMedium
Q19.What does this assign to x? int x = (3 > 2) ? 10 : 20;
A
10
Correct answer
B
20
C
3
D
2
C027Operators and Expressions • Type conversion
ImportantMedium
Q20.Automatic conversion of a lower data type to a higher one in an expression is called:
A
explicit conversion
B
type casting
C
implicit conversion (promotion)
Correct answer
D
coercion error
C029Operators and Expressions • Escape sequence
ImportantEasy
Q21.The escape sequence \t represents a:
A
newline
B
tab space
Correct answer
C
backspace
D
null character
C106Operators and Expressions • Logical
ImportantMedium
Q22.What is the value of !0 in C?
A
0
B
1
Correct answer
C
-1
D
error
C107Operators and Expressions • Logical
ImportantMedium
Q23.What is the value of !5 in C?
A
5
B
1
C
0
Correct answer
D
-5
C108Operators and Expressions • Logical
ImportantMedium
Q24.What is the value of (5 > 3 && 2 < 1) in C?
A
1
B
0
Correct answer
C
true
D
error
C109Operators and Expressions • Logical
ImportantMedium
Q25.What is the value of (5 > 3 || 2 < 1) in C?
A
0
B
1
Correct answer
C
2
D
error
C112Operators and Expressions • Type conversion
ImportantHard
Q26.What is the value of z? int x = 7, y = 2; float z = x / y;
A
3.5
B
3.0
Correct answer
C
4.0
D
3
C113Operators and Expressions • Type conversion
ImportantHard
Q27.To get the result 3.5 from 7 / 2 in C, you must:
A
use % instead of /
B
make at least one operand a float (e.g. 7.0 / 2)
Correct answer
C
use two int variables
D
add a semicolon
C114Operators and Expressions • Type conversion
ImportantMedium
Q28.What is the value of x? char c = 'A'; int x = c;
A
A
B
0
C
65
Correct answer
D
1
C116Operators and Expressions • Unary
ImportantMedium
Q29.Which of the following is a UNARY operator?
A
%
B
++
Correct answer
C
&&
D
*
C117Operators and Expressions • Assignment
ImportantMedium
Q30.After a = b = 5; what are the values of a and b?
A
a = 5, b = 0
B
a = 0, b = 5
C
both are 5
Correct answer
D
error
C119Operators and Expressions • Relational
ImportantEasy
Q31.What is the value of 5 != 5 in C?
A
1
B
0
Correct answer
C
5
D
error
C031Operators and Expressions • Comma operator
OtherHard
Q32.What is the value of the expression (5, 10, 15) in C?
A
5
B
10
C
15
Correct answer
D
30
C115Operators and Expressions • Associativity
OtherHard
Q33.The associativity of the assignment operator = in C is:
A
left to right
B
right to left
Correct answer
C
top to bottom
D
none