These formats can be followed by a digit to specify how many digits or digits after the decimal place to display.
E.g.. With a value of 34.5678,
F2 would give 34.56. G2 would give 34 C would give £34.56 (on a UK computer).
F2 would give 34.56.
G2 would give 34
C would give £34.56 (on a UK computer).