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1: List
out Categories of Operators in c language.
A1: Categories
of Operators in C Language are:
1. Arithmetic
Operators. 2. Logical Operators.
3. Relational
Operators 4. Assignment Operators.
5. Bitwise
Operators 6. Increment /
Decrement Operator.
7. Special
Operators. 8. Conditional
(Ternary) Operator.
2: What
is operator? Give the name of two unary operator.
A2: Operator
is used to perform or construct an expression along with operands.
Unary +,
unary -, increment and decrement operator.
3: Write
the output of the following expression:
a)
21/(int)3.5 = 7
b)45%10 -
4 + 4 = 5
c) 25 % 4
/ 4 = 0
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4:
Explain arithmetic operators with one example.
A4: Arithmetic
operators are used to perform basic arithmetic operations on variables.
E.g sum =
num1 + num2;
5: Explain
Relational operators with example. OR List out six relational operators and
give their meaning.**
A5: Relational
operators are used to compare two values. They return a Boolean result, which
is either true (1) or false (0).
1. Equal to (==): Checks if two values are
equal.
2. Not equal to (!=): Checks if two values are
not equal.
3. Greater than (>): Checks if the left
operand is greater than the right operand.
4. Less than (<): Checks if the left
operand is less than the right operand.
5. Greater than or equal to (>=): Checks if the left
operand is greater than or equal to the right operand.
6. Less than or equal to (<=): Checks if the left
operand is less than or equal to the right operand.
6: Select
the Correct hierarchy of arithmetic and logical operation.
a. ! / + * - && ||
b. * - /
&& || + !
c.
&& || + - ! / *
d. / * +
- ! && ||
7: List
all logical operators with their meaning.***
A7:
1. Logical AND (&&): Returns
true if both operands are true; otherwise, it returns false.
2. Logical OR (||): Returns true if at
least one of the operands is true; it returns false only if both operands are
false.
3. Logical NOT (!): Returns true if the
operand is false, and vice versa.
8: Describe
ternary operator in C language. OR Explain conditional operators with syntax
and example .OR
How we
can use conditional operator in place of if else statement. ***
A8: The
conditional operator (ternary operator) is a shorthand way to express a simple
if-else statement. It is denoted by the ? : symbols and has the following
syntax:
condition ?
expression_if_true : expression_if_false;
e.g. max =
num1 > num2 ? num1: num2;
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9: If
b=10 and c=5 then what will be the values of a, b and c after the execution of
following statement: a = b++ - c*2.
A9:
a = 0
b = 11
c = 5
10: Evaluate:
c=a-- + ++b, where a=8 and b=7.
A10:
++b becomes
8.
a—after this
expression becomes 7.
c = 8 + 8 =
16
11: Write
an output for the following program segment if valid. int n1,n2; n1=81 ;
n2=181; printf (“%d “ , n1 > n2 ? n1 : n2);
A11: 181
12: Explain
increment and decrement operators with one example.
A12: Increment
and decrement operators are used to increase or decrease the value of a
variable by 1. These operators are represented by ++ and –.
e.g. a = 5;
a++; (now here a becomes 6)
13: What
will be the output of following code int a, b=5; b++; a=b++; a++; a=++b;
printf(“%d %d”, a,b);
A13: 8 8.
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14 List bitwise operators in C language with
example. OR
List out
any four bit wise operators with their meaning and example.****
1. Bitwise AND (&): Performs a bitwise AND
operation between corresponding bits of two integers.
2. Bitwise OR (|): Performs a bitwise OR
operation between corresponding bits of two integers.
3. Bitwise XOR (^): Performs a bitwise
exclusive OR (XOR) operation between corresponding bits of two integers.
4. Bitwise NOT (~): Inverts the bits of a
single integer, changing 1s to 0s and vice versa.
15: Explain
use of comma operator with one example. Or Explain sizeof() and comma operator
with example.
A15: Comma
operator is used to combine the various expression.
e.g. a = (x
= 3, y = 4, x + y); (Here the value of a is 7).
16: Find
the false statement :
(I) &
represents Bitwise AND
(II) |
represents bitwise
(III) ^ represents Bitwise exclusive OR
(IV)
>> represents shift eft
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17: Explain
priority of operator with example.
The priority
of operators in C determines the order in which they are evaluated in an
expression.
Priority of
operators from higher to lower are as follow:
Parenthesis
– Unary Logical – Arithmetic – Bitwise – Relational – Bitwise AND – Bitwise XOR
– Bitwise OR – Logical – Conditional – Assignment – Comma.
Operators
with higher priority are evaluated first. Parentheses () are used to override
the default precedence.
18: Write
the o/p of (10+10)/10*10-10.
A18: 10.
19:
Evaluate the following expression.
1.
(125*(-3)-42)(19+432%66)
= (-375 -
42)(19 + 36)
= (-417)
(55)
= -22,935
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2. 20.0 –
(5.5/(0.5*10.0))+15.0
= 20.0 – (5.5/(5))
+ 15.0
= 20.0 –
(1.1) + 15.0
= 20.0 –
1.1 + 15.0
= 36.1
20: Remove
all redundant parentheses from the following expression.
1. (9-(65/7)
+60) %26)+40.
= (9−65/7+60)%26
+ 40.
2.
(4*(-11)/3-(((20%5)*8)-14)
=
4*−11/3−(20%5*8−14)
21: What
is the use of %d, %u, %i, %o, %x, %h and %l ?
A21:
1.
%d:
For printing or scanning integers.
2.
%u:
For printing or scanning unsigned integers.
3.
%i:
For printing or scanning integers in either decimal, octal, or hexadecimal
format.
4.
%o:
For printing or scanning integers in octal format.
5.
%x:
For printing or scanning integers in hexadecimal format.
6.
%X:
Prints hexadecimal digits in uppercase.
7.
%h:
Conjunction with integer format specifiers to indicate a short int.
8.
%l:
Conjunction with integer format specifiers to indicate a long int.
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22: Explain
special operators in detail.
A22:
Comma
Operator (``,`):
Syntax: expr1,
expr2, ..., exprn;
It evaluates
multiple expressions, returning the result of the last expression.
Sizeof
Operator:
Syntax:
sizeof(type) or sizeof expression;
It returns
the size, in bytes, of a type or an expression.
Address-of
Operator (&):
Syntax:
&variable
It returns
the memory address of a variable.
Pointer
Dereference Operator (*):
Syntax:
*pointer
It accesses
the value stored at the memory address pointed to by a pointer.
Member
Access Operator (->):
Syntax:
structure_pointer->member
It is used
to access a member of a structure through a pointer to that structure.
25: List
various output flags used in formatted output c statement.
A25: Some
commonly used output flags in the format specifier:
1.
(Hyphen/Minus):
Left-justify the output within the given field width.
2.
+
(Plus): Display the sign of a signed number, both positive and negative.
3.
0
(Zero): Pad with zeros instead of spaces.
4.
#
(Sharp/Hash): For o, x, or X conversions, prefix the output with 0, 0x, or 0X,
respectively.
5.
(Space):
Leave a space before positive numbers.
6.
*
(Asterisk): Use dynamic width or precision specified by an additional integer
argument.
26: List
the input statement in C.
A26: 1.
scanf();
2. gets();
3. getch();
4. getc();
27: Write
C statement for
1) N=(
ax3 + bx2 + c) ÷ ( dx2 +e2 )
N = (a * 3 +
b * 2 + c) / (d * 2 + e * 2)
2) Y= ax2
+ bx2, Z=x+ a2 +b2
Y = a * 2 +
b * 2, Z = x + a * 2 + b * 2.
28: Show
how 9mn / p+1-1/3(a + b) evaluated in c.
Let m = 1, n = 2, p = 3, a = 1, b = 2.
Ans = 7
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29: Show
how 9+8/2*7-5 evaluated in c.
A29: 9 + 4 *
7 – 5
9 + 28 – 5
37 – 9
32
30: If
b=10 and c=5 hen what will be the values of a ,b and c after the execution of
following statement:
a = b++ -
c*2;
A30:
a = 0
b = 11
c = 5
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