@printf([io::IO], "%Fmt", args...)

Printargs using Cprintf style format specification string. Optionally, anIO may be passed as the first argument to redirect output.

Examples

julia> @printf "Hello %s" "world"Hello worldjulia> @printf "Scientific notation %e" 1.234Scientific notation 1.234000e+00julia> @printf "Scientific notation three digits %.3e" 1.23456Scientific notation three digits 1.235e+00julia> @printf "Decimal two digits %.2f" 1.23456Decimal two digits 1.23julia> @printf "Padded to length 5 %5i" 123Padded to length 5   123julia> @printf "Padded with zeros to length 6 %06i" 123Padded with zeros to length 6 000123julia> @printf "Use shorter of decimal or scientific %g %g" 1.23 12300000.0Use shorter of decimal or scientific 1.23 1.23e+07julia> @printf "Use dynamic width and precision  %*.*f" 10 2 0.12345Use dynamic width and precision        0.12

For a systematic specification of the format, seehere. See also@sprintf to get the result as aString instead of it being printed.

Caveats

Inf andNaN are printed consistently asInf andNaN for flags%a,%A,%e,%E,%f,%F,%g, and%G. Furthermore, if a floating point number is equally close to the numeric values of two possible output strings, the output string further away from zero is chosen.

Examples

julia> @printf("%f %F %f %F", Inf, Inf, NaN, NaN)Inf Inf NaN NaNjulia> @printf "%.0f %.1f %f" 0.5 0.025 -0.00781250 0.0 -0.007812

@sprintf("%Fmt", args...)

Return@printf formatted output as string.

Examples

julia> @sprintf "this is a %s %15.1f" "test" 34.567"this is a test            34.6"

Printf.Format(format_str)

Create a C printf-compatible format object that can be used for formatting values.

The inputformat_str can include any valid format specifier character and modifiers.

AFormat object can be passed toPrintf.format(f::Format, args...) to produce a formatted string, orPrintf.format(io::IO, f::Format, args...) to print the formatted string directly toio.

For convenience, thePrintf.format"..." string macro form can be used for building aPrintf.Format object at macro-expansion-time.

Printf.format(f::Printf.Format, args...) => StringPrintf.format(io::IO, f::Printf.Format, args...)

Apply a printf format objectf to providedargs and return the formatted string (1st method), or print directly to anio object (2nd method). See@printf for more details on Cprintf support.