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  2. Comparison of programming languages (string functions)

    en.wikipedia.org/wiki/Comparison_of_programming...

    formatstring printf: items: Smalltalk: C: String.format(formatstring, items) Java: C: String.Format(formatstring, items) VB .NET, C#, F#.NET (format formatstring items) Scheme (SRFI 28) Lisp (format nil formatstring items) Common Lisp: Lisp (format formatstring items) Clojure: Lisp formatstring-f items: Windows PowerShell.NET [NSString ...

  3. printf - Wikipedia

    en.wikipedia.org/wiki/Printf

    The format string syntax and semantics is the same for all of the functions in the printf-like family. Mismatch between the format specifiers and count and type of values can cause a crash or vulnerability. The printf format string is complementary to the scanf format string, which provides formatted input (lexing a.k.a. parsing). Both format ...

  4. String interpolation - Wikipedia

    en.wikipedia.org/wiki/String_interpolation

    String interpolation is an alternative to building string via concatenation, which requires repeat quoting and unquoting; [2] or substituting into a printf format string, where the variable is far from where it is used. Compare:

  5. Uncontrolled format string - Wikipedia

    en.wikipedia.org/wiki/Uncontrolled_format_string

    The first version interprets buffer as a format string, and parses any formatting instructions it may contain. The second version simply prints a string to the screen, as the programmer intended. Both versions behave identically in the absence of format specifiers in the string, which makes it easy for the mistake to go unnoticed by the developer.

  6. "Hello, World!" program - Wikipedia

    en.wikipedia.org/wiki/"Hello,_World!"_program

    In the above example, the main( ) function defines where the program should start executing. The function body consists of a single statement, a call to the printf() function, which stands for "print formatted"; it outputs to the console whatever is passed to it as the parameter, in this case the string "hello, world".

  7. Prettyprint - Wikipedia

    en.wikipedia.org/wiki/Prettyprint

    Proper code formatting makes it easier to read and understand. Different programmers often prefer different styles of formatting, such as the use of code indentation and whitespace or positioning of braces. A code formatter or code indenter converts source code from one format style to another. This is relatively straightforward because of the ...

  8. String literal - Wikipedia

    en.wikipedia.org/wiki/String_literal

    A common use case is in constructing printf or scanf format strings, where format specifiers are given by macros. [ 18 ] [ 19 ] A more complex example uses stringification of integers (by the preprocessor) to define a macro that expands to a sequence of string literals, which are then concatenated to a single string literal with the file name ...

  9. Variadic function - Wikipedia

    en.wikipedia.org/wiki/Variadic_function

    Both take one argument that specifies the formatting of the output, and any number of arguments that provide the values to be formatted. Variadic functions can expose type-safety problems in some languages. For instance, C's printf, if used incautiously, can give rise to a class of security holes known as format string attacks.