Operators

Operators are operations that act on data types. There are arithmetic operators, assignment operators, relational operators, logical operators, and bitwise operators. Arithmetic operators can operate either on one number (unary) or two numbers (binary). Here is a list of the 9 operators in C and what they do.

Unary:

1. +
   • Ex. +6
   • Multiplies number by 1
2. -
   • Ex. -3
   • Multiplies number by -1
3. ++
   • Ex. x++
   • Increments number by 1 (this would be the same as x = x + 1)
4. --
   • Ex. counter--
   • Decrements number by 1 (this would be the same as counter = counter - 1)

Binary:

5. +

• Ex. 3 + 4
• Adds the two numbers

6. -

• Ex. 6 - 2
• Subtracts the two numbers

7. *

• Ex. 2 * 3.14 * r
• Multiplies the two numbers

8. /

• Ex. 6 / 4
• This will return 1
• Divide the two numbers, and ignores the remainder if the two arguments are both integers

9. %

• Ex. 6 % 4
• This will return 2
• Divide the two numbers and take the remainder