Delphi formatted output function (1): Format

Var
s:string;
Begin
Instruction type
S: = Format (' Maximum integer is:%d; minimum integer is:%d ', [Maxint,low (integer)]);
Return: The maximum integer is: 2147483647; Minimum integer is:-2147483648
{hint: The format instruction must start with%, is case-insensitive,%d represents an integer, and the second argument is a variant array}
S: = Format (' Maximum no minus sign integer is:%u ', [High (Cardinal)]);
Returns: The largest no minus sign integer is: 4294967295
{%u denotes a non-negative integer}
S: = Format (' Input-2 results are:%u ', [-2]);
Returns: Input-2 of the result is: 4294967294
{if the corresponding%u is a negative number, returns: No minus sign integer maximum-the absolute value of this digit + 1}
S: = Format ('%s!%s ', [' Hello ', ' I was in case ')];
Back to: Hello! I was in case
{%s represents a string}
S: = Format ('%f ', [Pi]);
Return: The value of pi is: 3.14
{%f represents a floating-point number, keeping or rounding two decimal places}
S: = Format ('%g ', [01.2345000]);
Returns: 1.2345
{%g represents a floating-point number, removing the extra 0}
S: = Format ('%n ', [12345.6789]);
return: 12,345.68
{%n represents a floating-point number, the integer part uses the thousand separator, and two decimal places are reserved}
S: = Format ('%m ', [12345.6789]);
return: ￥12,345.68
{%m represents a floating-point number, plus a currency tick, and the result depends on the locale of the system}
S: = Format ('%e ', [12345.6789]);
Returns: 1.23456789000000E+004
{%e represents an integer or floating-point number by scientific notation}
S: = Format ('%p ', [@Self]);
return: 0012F5BC
{%p represents a pointer address, in hexadecimal notation}
S: = Format ('%x ', [255]);
Back to: FF
{%x denotes an integer in hexadecimal}
Index
S: = Format ('%s%s ', [' million ', ' one ']);
S: = Format ('%0:s%1:s ', [' million ', ' one ']);
Back: In case
{The result of the above two lines is the same, 0: corresponds to the first value in the array; 1: Corresponds to the second value in the array}
S: = Format ('%1:s%0:s ', [' million ', ' one ']);
Returns: 10,000
{Flip the Order}
S: = Format ('%1:s%0:s%0:s%1:s ', [' million ', ' one ']);
Returns: 100,000,001
{repeated use}
Width and alignment
S: = Format ('%d,%8d,%d ', [n/a]);
Returns: 1, 2,3
{A 8-character width is specified for the second value, a missing space is filled in, or invalid if the specified is less}
S: = Format ('%d,%-8d,%d ', [n/a]);
Back to: 3
{-Indicates left-justified, right-aligned by default;-Symbol at Width front, Index after}
Specifying precision PREC
S: = Format ('%.9f ', [Pi]);
Returns: 3.141592654
{Specify the number of digits in the decimal point, value range 1-9, input 0 also when 1 is used}
S: = Format ('%.5d ', [12]);
Returns: 00012
{This is a specified number of digits for an integer and is invalid if it is small}
S: = Format ('%.3s ', [' format ']);
return: For
{Specifies the number of bits for a string and is invalid if it is large}
S: = Format ('%.3e ', [123.456]);
Returns: 1.23E+002
{Specify number of digits for scientific notation}
Order of instruction:
{"%" [index]: "] ["-"] [width] [". "Prec] Type}
ShowMessage (s);
End

Delphi formatted output function (1): Format