Operators

Operators are little symbols that do work.

They let you calculate, compare, and combine values.

Go feels familiar if you know other C-style languages.

One difference: Go has no ternary ?: operator.

Arithmetic operators

+ adds. - subtracts. * multiplies. / divides. % is the remainder.

With whole numbers, / drops the fraction. 10 / 3 is 3.

++ and --

++ adds one. -- subtracts one.

They only work as statements, not inside bigger expressions.

Comparison operators

Comparisons give back bool: true or false.

Use == != < > <= >= to ask questions about values.

Numbers do not turn into true or false by themselves.

Logical operators

&& means and. Both sides must be true.

|| means or. One true side is enough.

! means not. It flips true to false and false to true.

Assignment operators

You can mix math with assignment.

+= -= *= /= and %= update the same labeled box in place.

Next: use these comparisons inside if / else to make decisions.