Operator

An operator is a symbol that tells the interpreter to perform specific mathematical or logical functions. Silk supports the following operators:

Arithmetic Operators
Silk supports arithmetic operators as follows, assume A is 10, and B is 20

• +    Adds two operands.    A + B = 30
• -    Subtracts second operand from the first.    A - B = -10
• *    Multiplies both operands.    A * B = 200
• /    Divides numerator by de-numerator.    B / A = 2
• %   Modulus Operator and remainder of after an integer division.    B % A = 0
• ++ Increment operator increases the integer value by one.   A++ = 11
• --    Decrement operator decreases the integer value by one.    A-- = 9

Note: The Increment/Decrement operator in Silk is not absolutely the same as the operator in C. In Silk, i++ is equal to i=i+1, so it does not support left side Increment/Decrement and Assignment with Increment/Decrement.
The number can be added with string,  number will be converted to string automatically before it is added with string:


Relational Operators
Silk supports the following relational operators, assume A is 1, and B is 2

• ==   Checks if the values of two operands are equal or not. If yes, then the condition becomes true.     (A == B)  is false
• !=    Checks if the values of two operands are equal or not. If the values are not equal, then the condition becomes true.    (A != B) is true
• >     Checks if the value of left operand is greater than the value of right operand. If yes, then the condition becomes true.    (A > B) is false
• <     Checks if the value of left operand is less than the value of right operand. If yes, then the condition becomes true.   (A < B) is true
• >=  Checks if the value of left operand is greater than or equal to the value of right operand. If yes, then the condition becomes true.    (A >= B) is false
• <=  Checks if the value of left operand is less than or equal to the value of right operand. If yes, then the condition becomes true.    (A <= B) is true

Logical Operators
Silk supports the following logical operators, assume A is 1, and B is 0

• &&  Called Logical AND operator. If both the operands are non-zero, then the condition becomes true.    (A && B) is false
• ||      Called Logical OR Operator. If any of the two operands is non-zero, then the condition becomes true.    (A || B) is true
• !       Called Logical NOT Operator. If a condition is true, then Logical NOT operator will make it false.  !(A && B) is true

Assignment Operators

• =    Simple assignment operator. Assigns values from right side operands to left side operand.   
  C = A + B will assign the value of A + B to C
• +=  Add AND assignment operator. It adds the right operand to the left operand and assign the result to the left operand. 
  C += A is equivalent to C = C + A
• -=   Subtract AND assignment operator. It subtracts the right operand from the left operand and assigns the result to the left operand.   
  C -= A is equivalent to C = C - A
• *=   Multiply AND assignment operator. It multiplies the right operand with the left operand and assigns the result to the left operand.
  C *= A is equivalent to C = C * A
• /=    Divide AND assignment operator. It divides the left operand with the right operand and assigns the result to the left operand. 
  C /= A is equivalent to C = C / A
• %=    Modulus AND assignment operator. It takes modulus using two operands and assigns the result to the left operand. 
  C %= A is equivalent to C = C % A

Operators Precedence
Here is the Silk operators precedence listed from higher precedence to lower:

• Paren     ()      
• Postfix     [] .      
• Not         !    
• Multiplicative     * / %    
• Additive     + -    
• Relational     < <= > >=    
• Equality      == !=
• Logical AND     &&      
• Logical OR     ||    
• Assignment     = += -= *= /= %= ++ --

Silk currently does not support bitwise operators.