C - Programming Functions




C Function - Definition and Usage

  • A function is a group of statements that together perform a task.
  • Every C program has at least one function, which is main() , and all the most trivial programs can define additional functions.
C Function

C Library Function - Definition and Usage

  • In C- Programming the library functions are accompanied by the number of standard library functions which carry out various useful tasks.
  • In general, all the input and output operations and all math operations are implemented by library functions.
C Library Function

C Variable Scope - Definition and Usage

  • In C- Programming when you define a variable inside the function block, it will be considered as local variable, which can be accessed only inside the function block.
  • In C- Programming when you defining a variable outside the function block, it will be considered as global variable which can be accessed only outside the function block.
C Variable Scope

C Array - Definition and Usage

  • In C- Programming Array is a data structure, which is used for storing the collection of data of same type under single variable name.
  • Basically the array values are defined as constant.
  • Array variable names contains only letter, digit and underscore characters.
C Array

C String - Definition and Usage

  • In C- Programming, Strings are nothing but the array of characters ended with null character (‘\0’).
  • This null character indicates the end of the string.
  • Strings are always enclosed by double quotes. Whereas, character is enclosed by single quotes in C.
C String

C - String Functions - Definition and Usage

  • In C- Programming some inbuilt functions are available for manipulating the string.
  • Some of the string functions are listed below as follows :
C - String Functions


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