Standard numeric format string usage instructions and Examples

// Standard numeric format string usage instructions and Examples
Class numberformat
{
Static void main ()
{
// {Index [, alignment] [: Format]}
// Index-an integer starting from scratch, indicating the elements to be formatted in the object list.
// Alignment-an optional integer indicating the minimum width. Fill the remaining part with spaces. Negative Numbers indicate left alignment, and positive numbers indicate right alignment.
// Format-format string. A string in the standard numeric format is in the form of "axx". A is a single letter, which is described as follows:
// C-currency, XX indicates the number of decimal places
// D-decimal, XX indicates the number of valid digits, which is not filled with zero and can only be used as an integer
// X-hexadecimal with the same usage as d
// E-index, XX indicates the number of decimal places
// F-fixed point, XX indicates the number of decimal places
// N-number, output the thousands separator, and the rest are the same as F
// G-regular, XX indicates the number of valid digits, which is shorter than E or F
// P-percentage, XX indicates the number of decimal places
// For example, the output of the following statement is: "| ￥-5.00 |-05 |-05 |-5.0 |-500.00% | 12345.7 | 12,345.7 |"
System. console. writeline ("| {0: c} | {0: D2} | {0, 4: D2} | {0,-5: F1} | {0: P2} | {1: f1} | {1: N1} | ",-5, 12345.67 );
}
}