25.5.6  Converting real numbers to strings

The format command converts a real number to a string.

• format takes two arguments:
  • r, a real number.
  • str, a string used for formatting.
• format(str) returns r as a string with the requested formatting.

The formatting string can be one of the following:

• f (for floating-point format) followed by the number of digits to put after the decimal point.
• s (for scientific format) followed by the number of significant digits.
• e (for engineering format) followed by the number of digits to put after the decimal point, with one digit before the decimal points.

Examples