File Handling Programs In C Language

File Management Using C

Prepared By Hitesh Vataliya

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One of the difficult work for any one to access the notepad or word file using the c program. But Dennis Ritchie makes it possible for us with the help of fopen() function which is used for connection between our c program and file.

There are many builtin functions for file management in c programming language. Some of them are as below.

fopen() - used to connect with the file, for creating the file or opening the file which was already                        created by using the mode we can open it for 

               r   = reading 

               w = writing

               a  = appending

fclose() - closing the connection with the file after our work is completed.

getc()    - get one character from the file.

putc()    - print one character into the file.

getw()   - get one integer number from the file.

putw()   - Print one integer number into the file.

fscanf() - Scans or take as input one line or string or integer from the file.

fprintf() - Print one line or string or integer to the file.

fseek()   - move the file pointer into the file from begin, current position or end of the file as many                       steps we wants to move the file pointer.

                0 = beginning 

                1 = current position 

                0 = end of the file

 rewind() - move the file pointer to the beginning of the file or 0 th position into the given file.

ftell()     -  returns the position of the file pointer into the given file.

FILE is used for creating file pointer, it acts as a type.

Program 1. Write a program for create a file and insert 3 lines of text into the file.

#include<stdio.h>

#include<conio.h>

void main()

{

FILE *fp;

fp=fopen("Myfile.txt","w");

fprintf(fp,"Welcome to the VATALIYA TUITION CLASSES\n");

fprintf(fp,"FILE IS CREATED BY HITESH VATALIYA\n");

fprintf(fp,"TODAY IS 4TH DEC,2015");

fclose(fp);

}

Program 2. Write a program for reading a text file which was already created.

#include<stdio.h>

#include<conio.h>

void main()

{

FILE *fp;

char c;

fp=fopen("Myfile.txt","r");

c=getc(fp);

while(c!=EOF)

{

printf("%c",c);

c=getc(fp);

}

fclose(fp);

}