Go input and output formatting

Type example struct {
    a int
    b string
}

Prints an instance of the example struct.
P: = Example{1, 2}
Fmt. Printf ("%v\n", p)

If the value is a struct, the formatted output of%+V will include the field name of the struct body.
Fmt. Printf ("%+v\n", p)

The% #v form is the output of the GO syntax for that value. For example, the value of the run source snippet.
Fmt. Printf ("% #v \ n", p)

The type of value to be printed, using%T.
Fmt. Printf ("%t\n", p)

Formatting a Boolean value is simple.
Fmt. Printf ("%t\n", True)

There are several ways to format the shaping number, using%d for the standard decimal

System format.
Fmt. Printf ("%d\n", 123)

This binary representation of the output.
Fmt. Printf ("%b\n", 14)

This output corresponds to the character of the given integer.
Fmt. Printf ("%c\n", 33)

%x provides hexadecimal encoding.
Fmt. Printf ("%x\n", 456)

There are also many formatting options for floating-point types. Use%f to enter

The most basic decimal format for the line.
Fmt. Printf ("%f\n", 78.9)

%e and%e The floating-point format (a little bit less

The same) scientific notation of notation.
Fmt. Printf ("%e\n", 123400000.0)
Fmt. Printf ("%e\n", 123400000.0)

Use%s for basic string output.
Fmt. Printf ("%s\n", "\" string\ "")

Like the output in the Go source code with double quotes, use%q.
Fmt. Printf ("%q\n", "\" string\ "")

As with the number above, the%x output uses the BASE-16 encoded word

Each byte is represented by a 2-character string.
Fmt. Printf ("%x\n", "Hex This")

To output a pointer value, use%p.
Fmt. Printf ("%p\n", &p)

When outputting a number, you will often want to control the width and precision of the output, and you can use the number after% to control the output width. The default results use right-aligned and fill the blanks with spaces.
Fmt. Printf ("|%6d|%6d|\n", 12, 345)

Specifies the output width of a floating-point type, and the precision of the output can be specified by the syntax of width and precision.
Fmt. Printf ("|%6.2f|%6.2f|\n", 1.2, 3.45)

To be most aligned, use the-flag.
Fmt. Printf ("|%-6.2f|%-6.2f|\n", 1.2, 3.45)

Controls the width of the string output, ensuring that they are aligned when the class table is output. This is the basic right-aligned width representation.
Fmt. Printf ("|%6s|%6s|\n", "foo", "B")

To align Left, as with numbers, use the-flag.
Fmt. Printf ("|%-6s|%-6s|\n", "foo", "B")

SPRINTF formats and returns a string without any output.
S: = Fmt. Sprintf ("A%s", "string")
Fmt. PRINTLN (s)

You can use fprintf to format and output to IO. Writers rather than the OS. Stdout.
Fmt. fprintf (OS. Stderr, "An%s\n", "error")