C Programming

Operators — Practice MCQs for CCAT

40 Questions Section B: Programming C Programming

Practice 40 Operators multiple-choice questions designed for CDAC CCAT exam preparation. Click "Show Answer" to reveal the correct option with detailed explanation.

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Q1.
Which operator has the highest precedence in C?
AArithmetic
BRelational
CAssignment
DUnary
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Correct Answer: D — Unary

Unary operators have higher precedence than arithmetic and relational operators.

Q2.

What will be the output?


int x = 5;
printf("%d", x++);
A4
B5
C6
DError
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Correct Answer: B — 5

Post-increment prints the value first, then increments.

Q3.

What will be the output?


int x = 5;
printf("%d", ++x);
A4
B5
C6
DError
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Correct Answer: C — 6

Pre-increment increments the value first, then prints.

Q4.
Which operator is used to check equality?
A=
B==
C!=
D<=
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Correct Answer: B — ==

== compares two values for equality.

Q5.

What is the output?


printf("%d", 10 > 5 && 3 < 1);
A0
B1
CTrue
DFalse
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Correct Answer: A — 0

10 > 5 is true, 3 < 1 is false, so true && false = false (0).

Q6.
Which operator is used for bitwise AND?
A&&
B&
C|
D^
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Correct Answer: B — &

& performs bitwise AND operation.

Q7.

What will be the output?


printf("%d", 5 & 3);
A1
B3
C5
D7
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Correct Answer: A — 1

5 (101) & 3 (011) = 001 which is 1.

Q8.
Which operator is used to assign value?
A==
B:
C=
D->
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Correct Answer: C — =

= assigns value to a variable.

Q9.

What will be the output?


printf("%d", 10 / 4);
A2
B2.5
C3
DCompilation error
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Correct Answer: A — 2

Integer division truncates decimal part.

Q10.
Which operator has right-to-left associativity?
A+
B*
C=
D&&
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Correct Answer: C — =

Assignment operator has right-to-left associativity.

Q11.

What is the output?


int a = 10, b = 20;
printf("%d", a > b ? a : b);
A10
B20
C0
DError
Show Answer & Explanation

Correct Answer: B — 20

Ternary operator returns the larger value.

Q12.
Which operator is known as ternary operator?
A?:
B&&
C||
D::
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Correct Answer: A — ?:

?: takes three operands.

Q13.

What will be the output?


printf("%d", 5 | 3);
A1
B3
C5
D7
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Correct Answer: D — 7

5 (101) | 3 (011) = 111 which is 7.

Q14.
Which operator is used to invert bits?
A!
B~
C^
D&
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Correct Answer: B — ~

~ performs bitwise NOT operation.

Q15.

What will be the output?


printf("%d", !0);
A0
B1
CTrue
DError
Show Answer & Explanation

Correct Answer: B — 1

!0 is logical NOT of false, resulting in true (1).

Q16.
Which operator is used to access structure members using pointer?
A.
B->
C*
D&
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Correct Answer: B — ->

-> is used to access members via pointer.

Q17.

What is the output?


printf("%d", 8 >> 2);
A1
B2
C4
D8
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Correct Answer: B — 2

Right shift by 2 divides by 4.

Q18.
Which operator is used to get address of variable?
A*
B&
C#
D%
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Correct Answer: B — &

& returns address of variable.

Q19.

What will be the output?


printf("%d", 5 ^ 3);
A6
B8
C1
D7
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Correct Answer: A — 6

5 (101) XOR 3 (011) = 110 which is 6.

Q20.
Which of the following has lowest precedence?
A*
B+
C=
D()
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Correct Answer: C — =

Assignment operator has lower precedence than arithmetic operators.

Q21.

What will be the output?


int a = 5, b = 10;
printf("%d", a + b * 2);
A30
B25
C20
D15
Show Answer & Explanation

Correct Answer: B — 25

Multiplication has higher precedence than addition: 10*2 + 5 = 25.

Q22.

What will be the output?


printf("%d", (5 + 10) * 2);
A25
B30
C20
D15
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Correct Answer: B — 30

Parentheses have highest precedence.

Q23.
Which operator is used to test multiple conditions together?
A&
B&&
C|
D^
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Correct Answer: B — &&

&& is logical AND operator.

Q24.

What will be the output?


int x = 1;
printf("%d", x++ + ++x);
A3
B4
CUndefined
DCompilation error
Show Answer & Explanation

Correct Answer: C — Undefined

Modifying variable more than once between sequence points leads to undefined behavior.

Q25.

What will be the output?


printf("%d", 0 || 5);
A0
B1
C5
DError
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Correct Answer: B — 1

Logical OR returns 1 if any operand is true.

Q26.
Which operator is used to combine bits?
A&&
B|
C||
D!
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Correct Answer: B — |

Bitwise OR combines bits.

Q27.

What will be the output?


printf("%d", ~1);
A-1
B-2
C0
D1
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Correct Answer: B — -2

~1 inverts all bits; result depends on two's complement representation.

Q28.
Which operator is evaluated last?
A()
B*
C+
D=
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Correct Answer: D — =

Assignment operator has the lowest precedence.

Q29.

What will be the output?


int a = 10;
printf("%d", a += 5);
A10
B15
C5
DError
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Correct Answer: B — 15

a += 5 is equivalent to a = a + 5.

Q30.
Which of the following is NOT an assignment operator?
A+=
B*=
C/=
D==
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Correct Answer: D — ==

== is a relational operator, not assignment.

Q31.

What will be the output?


printf("%d", 5 << 1);
A5
B10
C2
D1
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Correct Answer: B — 10

Left shift by 1 multiplies by 2.

Q32.
Which operator is used for pointer dereferencing?
A&
B*
C->
D.
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Correct Answer: B — *

* dereferences a pointer.

Q33.

What will be the output?


int a = 0;
printf("%d", !a);
A0
B1
CTrue
DError
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Correct Answer: B — 1

Logical NOT of 0 is 1.

Q34.
Which operator checks inequality?
A=
B==
C!=
D<>
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Correct Answer: C — !=

!= checks not equal condition.

Q35.

What will be the output?


printf("%d", 4 & 1);
A0
B1
C4
D5
Show Answer & Explanation

Correct Answer: A — 0

4 (100) & 1 (001) = 000.

Q36.
Which operator is evaluated from right to left?
A+
B*
C=
D%
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Correct Answer: C — =

Assignment operator has right-to-left associativity.

Q37.

What will be the output?


printf("%d", 10 % 3);
A1
B3
C0
DError
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Correct Answer: A — 1

Modulus operator returns remainder.

Q38.
Which operator is used to separate expressions?
A;
B,
C:
D.
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Correct Answer: B — ,

Comma operator evaluates expressions left to right.

Q39.

What will be the output?


printf("%d", (5 > 3) + (2 > 4));
A0
B1
C2
DError
Show Answer & Explanation

Correct Answer: B — 1

True is 1 and false is 0 → 1 + 0 = 1.

Q40.
Which of the following is a unary operator?
A+
B*
C++
D&&
Show Answer & Explanation

Correct Answer: C — ++

++ operates on a single operand.

More C Programming Topics

C Basics Decision Control & Loops Functions & Storage Classes Pointers

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