Basics of C.ppt this is basic information about the c programming language
- 1. Basics of ‘C’ By :Lalit Raghav. Prof. Anupama Tiwari. GURUGRAM UNIVERSITY
- 2. General Aspect of ‘C’ C was originally developed in the 1970s, by Dennis Ritchie at Bell Telephone Laboratories, Inc. C is a High level , general –purpose structured programming language. Instructions of C consists of terms that are very closely same to algebraic expressions, consisting of certain English keywords such as if, else, for ,do and while C contains certain additional features that allows it to be used at a lower level , acting as bridge between machine language and the high level languages. This allows C to be used for system programming as well as for applications programming
- 3. Operators in C:An operator is a symbol which operates on a value or a variable. For example: + is an operator to perform addition. C programming has wide range of operators to perform various operations. For better understanding of operators, these operators can be classified as: • Arithmetic Operators • Increment and Decrement Operators • Assignment Operators • Relational Operators • Logical Operators • Conditional Operators • Bitwise Operators • Special Operators
- 4. LOGICAL Operator (&&,||,!) • Operator Meaning of Operator • && Logical AND • || Logical OR • ! Logical NOT
- 5. Logical AND
- 6. LOGICAL AND 2 CASE :
- 7. Logical OR :
- 8. Logical Not
- 9. Increment and Decrement Operators 1. C programming has two operators increment ++ and decrement -- to change the value of an operand (constant or variable) by 1. 2. Increment ++ increases the value by 1 whereas decrement -- decreases the value by 1. 3. These two operators are unary operators, meaning they only operate on a single operand. eg. int a=10, b=100 ++a = 11 --b = 99
- 10. C Assignment Operators • An assignment operator is used for assigning a value to a variable. The most common assignment operator is = • Operator Example Same as • = a = b a = b • += a += b a = a+b • -= a -= b a = a-b • *= a *= b a = a*b • /= a /= b a = a/b • %= a %= b a = a%b
- 11. C Relational Operators : • A relational operator checks the relationship between two operands. If the relation is true, it returns 1; if the relation is false, it returns value 0. • Relational operators are used in decision making and loops. Operator Meaning of Operator Example • == Equal to 5 == 3 returns 0 • > Greater than 5 > 3 returns 1 • < Less than 5 < 3 returns 0 • != Not equal to 5 != 3 returns 1 • >= Greater than or equal to 5 >= 3 returns 1 • <= Less than or equal to 5 <= 3 return 0