The left and right parts of a string: left right

### 6.3.4 The left and right parts of a string: left right

The left and right commands can find the left and right parts of a string. (See Section 6.15.3, Section 6.37.1, Section 6.38.2, Section 6.40.6, Section 6.55.4 and Section 6.55.5 for other uses of left and right.)

- left takes two arguments:
  - str, a string.
  - n, a non-negative integer.
- left(str,n) returns the first n characters of the string str.

Example.
Input:

left("hello",3)

Output:

"hel"

- right takes two arguments:
  - str, a string.
  - n, a non-negative integer.
- right(str,n) returns the last n characters of the string str.

Example.
Input:

right("hello",4)

Output:

"ello"