fputc() and fgetc() file handling functions

Writing File or fputc() function

The fputc() function is used to write a single character into file. It outputs a character to a stream.
putc() function is C library function, and it's used to write a character to the file.
This function is used for writing a single character in a stream along with that it moves forward the indicator's position.

Syntax: fputc(int c, FILE *stream)

Example:-

Reading File : fgetc() function

The fgetc() function returns a single character from the file. It gets a character from the stream. It returns EOF at the end of file.
getc() function is C library function, and it's used to read a character from a file that has been opened in read mode by fopen() function.
* getc() function returns next requested object from the stream on success.
* Character values are returned as an unsigned char cast to an int or EOF on end of file or error.
* The function feof() and ferror() to distinguish between end-of-file and error must be used.

Syntax: fgetc(FILE *stream)

Example:-

Comments

Identifiers in C

Identifiers are:- constant variables keywords Define constant:- Any information is constant data = information = constant types of constant primary:- integer,real,character secondary:- they are made with the help of primary such as:- array,string,pointer,union,etc. Define variables:- variables are the name of memory location where we store data variable name is any combination of alphabet,digit the first letter cannot be a digit Keywords:- keywords are the predefined or reserved words.In C there are 31 keywords.C is a case sensitive so use keyword in small alphabets.

Functions:---

Definition:- it is basically a piece of code it has name for identification a function can be called multiple times to maintain the reusability and modularity. by writing function we can avoid same writing/piece of code Function aspects:- 3 aspects of function are 1.function declaration:- a function must be declared globally in c , to tell the compiler about function name, function return type, function parameter. Syntax:- return_type function_name(arguments or data_types parameter); example:- void sum(int a,int b); 2.function call:- a function can be called anywhere from the program, pass the same no. of parameter as we write in function declaration. Syntax:- function_name(argument_list) example:- sum(a,b) 3.function definition:- it contains the actual statements whi...

Introduction to C

About C:- C is a high-level language . It was initially first developed by D ennis Ritchie in 1972. It was developed to overcome the limitation of previous language such as B,BCPL etc. It was developed for Unix operating System It inherits many features of previous language Features/Advantage:- Simple :- because it provide data types, library function etc. Machine Independent or Portable:- because it can be executed on different machine Procedural language:- Instruction in c program are executed step by step Structured programming language:- break the problem into parts It provide dynamic memory allocation , pointers etc. Speed:-It is faster than another programming language like java, python etc. Disadvantage of C:- It does not support oops concept in which inheritance, polymorphism, encapsulation etc. come. It does not support namespace concept It does not support constructor and destructor There is lack of excepti...

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