fclose in c

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What is fclose in c programming?

fclose in c is used to close the file which was opened for a specific purpose.

It is a file handling function in c.

fclose in c is found in standard input/output library i.e. stdio.h.

Upon closing the file using fclose all the buffers are also flushed.

Prototype

int fclose(FILE *fp);

Parameters of fclose in c

The fclose function closes the file which is pointed by a file pointer.

Return value of fclose in c

It returns zero after successfull operation otherwise EOF is returned as error.

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Example programs for fclose in c

Example 1

#include<stdio.h>

int main()
{
  FILE *fpointer;
  int i;
  fpointer=fopen("scholar.txt","w");
  for(i=1;i<=3;i++)
     putw(i,fpointer);
  fclose(fpointer);
  return 0;
}

Code explanation

The file is closed by calling fclose function after putting values into the file.

Example 2

#include <stdio.h>

int main () {
   FILE *fpointer;
 
   fpointer = fopen("scholar.txt", "w");

   fprintf(fpointer, "%s", "Hello,this is scholarsoul");
   fclose(fpointer);
   
   return(0);
}

Code explanation

The file is closed by calling fclose function after putting values into the file.

fclose() Man page

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Difference between fopen and fclose in c.

fopen in c used to open a file to perform a task like reading/writing. fclose in c is used to close a file that is opened to perform a task.

fopen in c returns a file pointer otherwise NULL on error. fclose in c returns zero after successful operation otherwise EOF is returned as an error.

fopen works on a file in reading/writing mode. fclose only closes the file which was opened in reading/writing mode.

fopen uses the buffer. fclose flushes the buffer.

Prototypes are as follows

FILE *fopen(const char *fname,const char *mode);

int fclose(FILE *fp);

fopen in c	fclose in c
Opens a file in read/write mode.	Closes the file.
FILE *fopen(const char *fnmae,const char *mode);	int fclose(FILE *fp);
Returns a file pointer otherwise NULL on error.	Returns zero after successfull operation otherwise EOF is returned as error.
Uses the buffer.	Flushes the buffer.

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Difference between fseek and fclose in c.

fseek in c used to change the file pointer position to a specified stream. fclose is used to close the opened file.

fseek returns zero on successful operation otherwise non-zero value on error. fclose returns zero after successful operation otherwise EOF is returned as an error.

fseek takes three arguments. fclose takes only one argument.

fseek seeks in an open file. fclose closes the opened file.

Prototype is as follows

int fseek(FILE *strm,long int offst,int whnce);

int fclose(FILE *fp);

fseek in c	fclose in c
Used to change the file pointer position to a specified stream.	Used to close the opened file.
int fseek(FILE *strm,long int offst,int whnce);	int fclose(FILE *fp);
Returns zero on successful operation otherwise non-zero value on error.	Returns zero after successfull operation otherwise EOF is returned as error.
Takes three arguments.	Takes only one argument.
Seeks in an open file.	Closes the opened file.

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Difference between ftell and fclose in c.

ftell in c is used to get the total size of a file. fclose is used to close a file.

ftell returns the current value of a file pointer. fclose returns zero after successful operation otherwise EOF is returned as an error.

ftell function works on open file. fclose function closes the open file.

Prototypes are as follows

long int ftell(FILE *stm);

int fclose(FILE *fp);

ftell in c	fclose in c
Used to get the total size of a file.	Used to close a file.
long int ftell(FILE *stm);	int fclose(FILE *fp);
Returns the current value of a file pointer.	Returns zero after successfull operation otherwise EOF is returned as error.
Works on open file.	Closes the open file.

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Difference between fprintf and fclose in c.

fprintf function in c is used to format the output to a file instead of stdout console. fclose closes a file.

fprintf returns the number of characters written. if any error occurs it returns a negative value(-1). fclose returns zero after successful operation otherwise EOF is returned as an error.

fprintf works on open file. fclose closes a open file.

fprintf takes many arguments. fclose takes only one argument.

Prototypes are as follows

int fprintf(FILE *file_pointer, const  char *format_string,.......);

int fclose(FILE *fp);

fprintf in c	fclose in c
Used to format the output to a file instead of stdout console.	Closes a file.
int fprintf(FILE *file_pointer, const char *format_string,.......);	int fclose(FILE *fp);
Returns the number of characters written. if any error occurs it returns negative value(-1).	Returns zero after successful operation otherwise EOF is returned as error.
Takes many arguments	Takes only one argument.

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