In Go you can name the return value of a function.

The above function is the same as this one:.

Multiple return values.

Takes two arguments and returns a string.

This function neither takes paramters nor return value.

Takes two arguments but returns no value.

Variadic functions A variadic function is a function that takes in a variable number of arguments.

Type is used create alias for existing type or new custom data types.

Defininig a custom data type.