Download presentation

Presentation is loading. Please wait.

Published byCody Lewis Modified over 4 years ago

1
1 C Programming

2
2 Operators

3
3 Operators in C An operator is a symbol that tells the computer to perform certain mathematical or logical manipulation.

4
4 Operands The data item that operators act upon are called Operands. a + b Operands Operator

5
5 Types of Operators On the basis of number of operands, operators are divided into three types:- Unary Operators – Acts upon one operand Binary Operators – Acts upon two operands Ternary Operators – Acts upon three operands.

6
6 Types of Operators:- Arithmetic Operators Relational Operators Logical Operators Assignment Operators Increment or Decrement Operator Conditional Operators Bitwise Operators Special Operators

7
7 Arithmetic Operators Operator Symbol Action Example Addition + Adds operandsx + y Subtraction - Subs second from firstx - y Negation - Negates operand-x Multiplication * Multiplies operandsx * y Division / Divides first by secondx / y (integer quotient) Modulus % Remainder of divide opx % y

8
8 Relational Operators Comparisons can be done with the help of relational operators These consist of:- OperatorMeaning

9
9 Logical Operators Expression which combines two or more relational expression is termed as a logical or compound relational expression The result of these operators is either TRUE or FALSE. Logical expressions are:- && logical AND ||Logical OR !Logical NOT Ex- if (age>55 && salary <1000)

10
10 Assignment Operator Used to assign the result of an expression to a variable. ex- int i=20; 1. Simple Assignment e.g. = 2. Compound Assignment e.g. +=, -=, *=, /=, &= 3. Expression Assignment e.g. a=5+(b=8 + (c=2)) - 4

11
11 Operators continued…….. x + = y+1; is same as x = x + (y+1) i.e. += means add y+1 to x Similarly…….. a=a-1a - = 1; a=a*(n+1)a *= n+1; a=a/(n+1)a/= n+1;

12
12 Increment and Decrement C has two very useful operators not generally found in other languages. These are the increment and decrement operators. i.e ++ and -- ++ operator adds 1 to the operand and -- operator subtracts 1 to the operand. Both these operators are unary operators and take the following form. ++m (prefix operator) ; or m++ (postfix operator); --m; or m--; ++m = m+1; --m= m-1;

13
13 Ex… int m = 5, y ; y = ++m ; printf ( %d%d " y,m ); Result??? int m = 5, y ; y = m++ ; printf ( %d%d " y,m ); Result?????

14
14 Conditional Operator.. A ternary operator pair ?: is available in C to construct conditional expressions of the form. exp1 ? exp2 : exp3; Operator ?: works as follows: exp1 is evaluated first. If it is nonzero (true),then the expression exp2 is evaluated and becomes the value of the expression otherwise vice versa.

15
15 Example…. a=10 ; b=15; x=(a>b) ? a : b; It can be written as … if ( a > b ) x =a; else x=b;

16
16 Bitwise Operator…. C has distinction of supporting special operators known as Bitwise Operators for manipulation of data at bit level. These are used to test bits. OperatorsMeaning &bitwise AND |bitwise OR ^bitwise exclusive OR (Ex-OR) <

17
17 Bitwise Operator…. Examples - int a = 4, b = 3 a = 0000 0100 b = 0000 0011 -------------- a & b = 0000 0000 a | b = 0000 0111 a ^ b = 0000 0111 In Ex-OR (if both bits are same : 0) (if both bits are diff : 1) a = 10 b = ~ a => ~ (1010) => 0101

18
18 Bitwise operators The shift operator: x << n Shifts the bits in x n positions to the left, shifting in zeros on the right. If x = 1111 1111 1111 0000 2 x << 1 equals 1111 1111 1110 0000 2 x >> n Shifts the bits in x n positions right. shifts in 0 if it is an unsigned integer x >> 1 is 0111 1111 1111 1000 2 (unsigned)

19
19 Operator Precedence Operator Precedence Associativity ( ) 1 L to R ~, ++, --, unary - 2 R to L *, /, % 3 L to R +, - 4 L to R > 5 L to R, >= 6 L to R ==, != 7 L to R & 8 L to R ^ 9 L to R !10 L to R &&11 L to R ||12 L to R ? :13 R to L =, +=, -=, etc.14 R to L

20
20 Special Operators…. C supports some special types of operators…. such as comma operators, sizeof operator, pointer operators ( & and * ) and member selection operators (. and -> ). Comma Operator:- The comma operator can be used to link the related expressions together. A comma-linked list of expressions are evaluated left to right and the value of right- most. Ex:- value = (x=10, y=5, x +y);

21
Problems 21 Q1. a = 2 * 3 % 4 + 4 / 4 + 8 – (-2) + 5 / 8 Q2.kk = 3 / 2 * 4 % 3 + 3 / 8 + 3 Q3.int i = 4, j = -1, k = 0, y, z ; y = i + 5 && j + 1 || k + 2 ; z = i + 5 || j + 1 && k + 2 ; printf ( "\ny = %d z = %d", y, z ) ;

22
Problems 22 Q5. int z, x = 5, y = - 10, a = 4, b = 2 z = x ++ - - y * b / a Q4.int i = 4, j = -1, k = 0, w, x, y, z ; w = i || j || k ; x = i && j && k ; y = i || j && k ; z = i && j || k ; printf ( "\nw = %d x = %d y = %d z = %d", w, x, y, z ) ;

23
Problems 23 Q6.int a = 10, b b = a++ + ++ a; Print a, b Q7.int a = 4; printf(%d%d, a++ + ++a, a++); Q8.int i = 5; printf(%d, i = ++i = = 6);

24
Problems 24 Q9.int a = 3, b b = ++a + ++ a + ++a; Print a, b Q10.int a = 4, b ; b = a++ + a++ + a++; Print a, b Q11.int i = 5, j ; j = ++i + i++ + ++i; Print i, j

25
Problems 25 Q12. Point out the errors, if any (a) int 314.562 * 150; (b) name = Ajay ; (c) Varchar = 3 ; (d) 3.14 * r * r * h = vol_of_cyl ; (e) area = 3.14 * r ** 2; (f) a = b = 3 = 4 ;

26
Problems 26 Q13. void main() { float a = 5, b = 2; int c; c = a % b; printf(%d, c); Q14. int c=0,d=5,e=10,a; a=c>1?d>1||e>1?10:20:30; printf(a=%d,a);

27
Problems 27 Q15. int x, y, z ; x=y=z=1; z= ++x || ++y && ++z; printf(%d%d%d,x,y,z); Q16. #define x 5+2 void main( ) { int a; a = x * x * x; printf(%d, a); }

28
Problems 28 Q17. void main( ) { int a; a=sizeof( 5.6 ); printf("%d",a); } Q18. int a=0,b=10; if(a=0){ printf("true"); } else{ printf("false"); }

Similar presentations

OK

DIVIDING INTEGERS 1. IF THE SIGNS ARE THE SAME THE ANSWER IS POSITIVE 2. IF THE SIGNS ARE DIFFERENT THE ANSWER IS NEGATIVE.

DIVIDING INTEGERS 1. IF THE SIGNS ARE THE SAME THE ANSWER IS POSITIVE 2. IF THE SIGNS ARE DIFFERENT THE ANSWER IS NEGATIVE.

© 2018 SlidePlayer.com Inc.

All rights reserved.

To ensure the functioning of the site, we use **cookies**. We share information about your activities on the site with our partners and Google partners: social networks and companies engaged in advertising and web analytics. For more information, see the Privacy Policy and Google Privacy & Terms.
Your consent to our cookies if you continue to use this website.

Ads by Google

Download ppt on mind controlled robotic arms for sale Ppt on minerals and energy resources for class 10 free download Ppt on bluetooth controlled robot Educational backgrounds for ppt on social media Convert pps to ppt online Ppt on polynomials in maths Ppt on afforestation and deforestation Ppt on uses of water Ppt on chromosomes and genes worksheet Ppt on sustainable tourism practices