Character Input / Output in file

Character Input / Output in file

putc()

This function is used to write a character to a file. It works same like as putchar() function and handle one character at  a time.

Syantax:

int putc(int char, FILE *stream);

Here, the file pointer indicates the file to write  to. the char is called an integer in putc(). On success the character is returned. If an error occurs, the error indicator for the stream is set and EOF is returned.

For every operation of putc() function , the file pointer moves position of character one by one.

Ex,

FILE *fp;

fp = fopen(“book.txt”, “w”);

char ch=’r’;          

putc(ch,fp);

getc()

This function is used to read a character from a  file. The file has been open in read mode. It works same like as getchar() function and handle one character at  a time.

Synatx:

int getc(File_ptr); OR int getc(FILE *stream);

Here , Gets the next character (an unsigned char) from the specified stream and advances the position indicator for the stream.

For every operation of getc() function , the file pointer moves position of character one by one.

On success the character is returned. If the end-of-file is encountered, then EOF is returned and the end-of-file indicator is set. If an error occurs then the error indicator for the stream is set and EOF is returned.

Ex,

FILE *fp;

fp = fopen(“book.txt”, “r”);

char;

ch=getc(fp);

         

fputc()

This function is used to write a character to a file.

Syntax:

int fputc(int char, FILE *stream);

Here, first argument specifies the character that wanted to write in file. Second argument is the pointer to file which stores address of the location of file.

On success the character is returned. If an error occurs, the error indicator for the stream is set and EOF is returned.

To use fputc() file must be opened in any available mode

Ex,

FILE *fp;

fp = fopen(“book.txt”, “w”);

char ch=’r’;          

fputc(ch,fp);

fgetc()

This function is used to read content of file from memory.

Syntax:

int fgetc(File_ptr);

Here, File_ptr is the pointer to file.

It reads  the character  from the current  position and moves pointer to next position so that it now pointes to the next character.

On success the character is returned. If the end-of-file is encountered, then EOF is returned and the end-of-file indicator is set. If an error occurs then the error indicator for the stream is set and EOF is returned.

Ex,

FILE *fp;

fp = fopen(“book.txt”, “r”);

char;          

ch=fgetc(fp);

Posted By : Ruchita Pandya