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Built-in Function ​

C Built-in Function ​

1. Standard I/O Functions

  • printf(): Outputs formatted data to the console.
  • scanf(): Reads formatted data from the console.
  • fprintf(): Writes formatted data to a file.
  • fscanf(): Reads formatted data from a file.

2. String Handling Functions

  • strlen(): Returns the length of a string.
  • strcpy(), strncpy(): Copies strings.
  • strcmp(): Compares two strings.
  • strcat(), strncat(): Concatenates strings.

C++ Builtin Function ​

1. Standard I/O Functions (iostream library)

  • cout: Outputs data to the console.
  • cin: Reads data from the console.
  • getline(): Reads a line of text from input

2. Standard Template Library (STL) Functions

  • sort(): Sorts elements in a container.
  • find(): Finds an element in a container.
  • swap(): Swaps values between variables or containers.

Java Builtin Function ​

1. System Functions

  • println(): Prints a line to the console.
  • print(): Prints to the console.
  • exit(): Terminates the program.

2. String Class Functions

  • length(): Returns the length of a string.
  • charAt(): Returns the character at a specified index.
  • substring(): Extracts a substring from a string.

Python Builtin Function ​

1. I/O Function

  • print: used to output data to the console.
  • input(): read data from the console.

2. String Function

  • capitalize() : returns the first character of a string as an uppercase letter and the rest of the characters as lowercase letters.
  • split() : breaks bigger strings into smaller strings by splitting a string into a list.
  • str() : turns a specified object into a string.
  • upper() : converts all of the letters in a string to uppercase.
  • join() : returns a string by joining all items in an iterable together.