Operators in c
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This slides will provide information regarding operators used in C language.It also contains rules for increment as well as decrement operators.
Operators in c
- 2. v The operators is a symbol that tells the computer to perform certain mathematical or logical manipulations. v Operators are used in programs to manipulate data and variables. v They usually form a part of the mathematical or logical expressions. Copyright 息 2017 by Milap Bhanderi
- 3. C operators can be classi鍖ed into a number of categories. 1. Arithmetic operator 2. Relational operator 3. Logical operator 4. Assignment operator 5. Increment and decrement operator 6. Conditional operator 7. Bitwise operator 8. Special operator Copyright 息 2017 by Milap Bhanderi
- 4. Arithmetic operator Operator Meaning + Addition or unary plus - Subtraction or unary minus * Multiplication / Division % Modulo division Copyright 息 2017 by Milap Bhanderi
- 5. Relational Operators Operator Meaning < Is less than <= Is less than or equal to > Is greater than >= Is greater than or equal to == Equal to != Not equal to Copyright 息 2017 by Milap Bhanderi
- 6. Logical Operators Operator Meaning && Logical AND || Logical OR ! Logical NOT Logical expression or a compound relational expression : An expression that combines two or more relational expressions Ex: if (a==b && b==c) Copyright 息 2017 by Milap Bhanderi
- 7. Truth Table a b Value of the expression a && b a || b 0 0 0 0 0 1 0 1 1 0 0 1 1 1 1 1 Copyright 息 2017 by Milap Bhanderi
- 8. Assignment operators Syntax: Where = variable, = shorthand assignment operator = expression Ex: x=x+3 x+=3 Copyright 息 2017 by Milap Bhanderi
- 9. Shorthand Assignment operators Simple assignment operator Shorthand operator a = a+1 a + =1 a = a-1 a - =1 a = a* (m+n) a * = m+n a = a / (m+n) a / = m+n a = a %b a %=b Copyright 息 2017 by Milap Bhanderi
- 10. Increment & Decrement Operators C supports 2 useful operators namely : 1. Increment ++ 2. Decrement -- The ++ operator adds a value 1 to the operand The operator subtracts 1 from the operand ++a or a++ --a or a-- Copyright 息 2017 by Milap Bhanderi
- 11. Rules for ++ & -- operators 1. These require variables as their operands 2. When postfix either ++ or is used with the variable in a given expression, the expression is evaluated first and then it is incremented or decremented by one 3. When prefix either ++ or is used with the variable in a given expression, it is incremented or decremented by one first and then the expression is evaluated with the new value Copyright 息 2017 by Milap Bhanderi
- 12. Conditional operators Syntax: Where , and are expressions Working of the ? Operator : Exp1 is evaluated first, if it is nonzero(1/true) then the expression2 is evaluated and this becomes the value of the expression, If exp1 is false(0/zero) exp3 is evaluated and its value becomes the value of the expression Ex: m=2; n=3 r=(m>n) ? m : n; Copyright 息 2017 by Milap Bhanderi
- 13. Bitwise operators These operators allow manipulation of data at the bit level Operator Meaning & Bitwise AND | Bitwise OR ^ Bitwise exclusive OR << Shift left >> Shift right Copyright 息 2017 by Milap Bhanderi
- 14. Special operators 1. Comma operator ( , ) 2. sizeof operator sizeof( ) 3. Pointer operators ( & and *) 4. Member selection operators ( . and ->) Copyright 息 2017 by Milap Bhanderi