The document provides an overview of operators and expressions in the C programming language, emphasizing their importance for data manipulation and concise coding. It categorizes operators into arithmetic, relational, logical, bitwise, assignment, and others, while explaining operator precedence and associativity. Mastery of these concepts is essential for effective C programming.

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C LANGUAGE
ONLINE TRAINING

2. OPERATORS AND
EXPRESSIONS IN C
LANGUAGE
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3. THE C PROGRAMMING LANGUAGE, YOU NEED TO GET A GRIP ON
OPERATORS AND EXPRESSIONS. C USES SYMBOLS CALLED
OPERATORS TO PERFORM OPERATIONS ON VARIABLES AND
CONSTANTS. THESE OPERATORS COME IN HANDY WHEN YOU WANT
TO MANIPULATE DATA AND CREATE EXPRESSIONS. AN EXPRESSION IS
A MIX OF OPERATORS, CONSTANTS, AND VARIABLES THAT BOILS
DOWN TO A SINGLE VALUE.
INTRODUCTION
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ARITHMETIC OPERATORS
RELATIONAL OPERATORS
LOGICAL OPERATORS
BITWISE OPERATORS
ASSIGNMENT OPERATORS
OTHER OPERATORS
OPERATOR PRECEDENCE AND
ASSOCIATIVITY IN C
KEY OPERATORS IN C
LANGUAGE
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5. ARITHMETIC OPERATORS:
THE C LANGUAGE USES ARITHMETIC OPERATORS TO DO BASIC MATH.
THESE INCLUDE ADDING (+) TAKING AWAY (-), TIMES (*), DIVIDE (/), AND
FINDING REMAINDERS (%).
RELATIONAL OPERATORS:
WHEN YOU WANT TO COMPARE TWO THINGS IN C, YOU USE RELATIONAL
OPERATORS. THEY GIVE YOU A YES OR NO ANSWER. ARE THESE TWO
IDENTICAL?" (==), "IS THIS DIFFERENT FROM THAT?" (!=), "IS THIS
BIGGER THAN THAT?" (>), AND "IS THIS SMALLER THAN THAT?" (<).
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6. LOGICAL OPERATORS:
LOGICAL OPERATORS IN C HELP YOU LINK DIFFERENT CONDITIONS. THEY
FIGURE OUT HOW THESE CONDITIONS FIT TOGETHER. YOU CAN USE "AND"
(&&) TO CHECK IF TWO THINGS ARE TRUE, "OR" (||) TO SEE IF AT LEAST
ONE THING IS TRUE, AND "NOT" (!) TO FLIP A CONDITION.
BITWISE OPERATORS:
BITWISE OPERATORS WORK ON THE BITS OF WHOLE NUMBER OPERANDS.
THE OPERATIONS THAT FALL UNDER THIS CATEGORY ARE BITWISE AND
(&), BITWISE OR (|), BITWISE XOR (^), BITWISE NOT (~), LEFT SHIFT (<<),
AND RIGHT SHIFT (>>).
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7. ASSIGNMENT OPERATORS:
ASSIGNMENT OPERATORS GIVE VALUES TO VARIABLES. THE BASIC
ASSIGNMENT OPERATOR IS (=). COMPOUND ASSIGNMENT OPERATORS
LIKE (+=, -=, *= /=) DO THE OPERATION AND GIVE THE RESULT IN ONE
STEP.
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8. SIZEOF OPERATOR: FIGURES OUT THE SIZE OF ITS OPERAND.
COMMA OPERATOR ( , ): THIS CHECKS THE FIRST PART, THROWS IT
AWAY, AND GIVES BACK THE RESULT OF THE SECOND PART.
CONDITIONAL OPERATOR ( ? : ): THIS IS A THREE-PART TOOL TO MAKE
DECISIONS IN CODE.
DOT (.) AND ARROW (->) OPERATORS: THESE HELP YOU GET TO PARTS
OF CLASSES, STRUCTURES, AND UNIONS.
OTHER OPERATORS:
BESIDES THESE, C HAS SOME OTHER OPERATORS FOR SPECIFIC JOBS:
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9. CAST OPERATOR: THIS CHANGES ONE TYPE OF DATA TO ANOTHER
USING (TYPE) EXPRESSION.
ADDRESSOF (&) AND DEREFERENCE (*) OPERATORS: THESE WORK
WITH POINTERS TO FIND WHERE A VARIABLE LIVES AND TO SEE WHAT'S
INSIDE A POINTER, IN THAT ORDER.
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10. UNARY, BINARY AND TERNARY OPERATORS IN C: C GROUPS
OPERATORS INTO THREE CATEGORIES BASED ON HOW MANY OPERANDS
THEY USE:
UNARY OPERATORS: THESE WORK ON ONE OPERAND.
BINARY OPERATORS: THESE WORK ON TWO OPERANDS.
TERNARY OPERATOR: C HAS ONE TERNARY OPERATOR, WHICH IS THE
CONDITIONAL OPERATOR ( ?).
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11. OPERATOR PRECEDENCE AND ASSOCIATIVITY IN C:
WHEN C EXPRESSIONS HAVE MULTIPLE OPERATORS, EACH OPERATOR
HAS ITS OWN PRECEDENCE AND ASSOCIATIVITY:
PRECEDENCE: DECIDES THE SEQUENCE OF EVALUATION IN EXPRESSIONS.
THE SYSTEM EVALUATES OPERATORS WITH HIGHER PRECEDENCE FIRST.
ASSOCIATIVITY: POINTS OUT THE DIRECTION FOR EVALUATING
OPERATORS WITH THE SAME PRECEDENCE LEVEL (LEFT TO RIGHT OR
RIGHT TO LEFT).
TO WRITE BUG-FREE AND SOUND CODE IN C, YOU NEED TO UNDERSTAND
OPERATOR PRECEDENCE AND ASSOCIATIVITY.
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12. CONCLUSION:
OPERATORS AND EXPRESSIONS ARE AT THE HEART OF C PROGRAMMING.
THEY LET DEVELOPERS HANDLE DATA WELL AND WRITE SHORT CODE. IF
YOU WANT TO GET GOOD AT C PROGRAMMING, YOU MUST MASTER THESE
IDEAS.
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