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The operator is the symbol that tells the computer to perform a specific mathematical or logical manipulation, and C operators are classified into 8 categories, which are: Arithmetic Operators Relational Operators Logical Operators Assignment Operators Increment and Decrement Operators Conditional Operator Bitwise Operators And Special Operators cus on the most important operators, which are: Arithmetic Operators Relational Operators Logical Operators And Increment and Decrement Operators Arithmetic Operators are used to perform mathematical calculations like addition (+), subtraction (-), multiplication (*), division (/), and modulus (%). Increment and Decrement Operators Increment and Decrement Operators are useful operators generally used to minimize the calculation. for example: ++x and x++ means x=x+1 or −−x and x−−means x=x-1. But there is a slight difference between ++ or −− written before or after the operand. Applying the pre-increment first adds one to the operand. Then, the result is assigned to the variable on the left whereas post-increment first assigns the value to the variable on the left and then increments the operand. for further explanation: ++x increments the value of x and then returns x x++ returns the value of x and then increments for example: int x = 0; int y = 0; y = ++x; the result is : y=1, x=1 since the x=x+1 will be performed first, then the value of x will be stored in the variable y int x = 0; int y = 0; y = x++; the result is : y=0, x=1 since the initial value of x will be stored in y then the incrementation operation will be performed Relational Operators Relational operators are used to comparing two quantities or values. and they are: == means equal to != means Is not equal to > means Greater than < means Less than >= means Greater than or equal to <= means Less than or equal to Logical Operators C provides three logical operators when we test more than one condition to make decisions. These are: && which means logical AND, (if both expressions evaluate as True, the result is True. If either expression evaluates to False, the result is False) || which means logical OR (if either or both expressions evaluate to True, the result is True) and ! which means logical NOT It performs logical negation on an expression. so if the expression evaluates to True, the result is false, and vice versa.