Explain fgetc() and fputc() functions in C language

File is collection of records or is a place on hard disk, where data is stored permanently.

Operations on files

The operations on files in C programming language are as follows −

• Naming the file
• Opening the file
• Reading from the file
• Writing into the file
• Closing the file

Syntax

The syntax for opening a file is as follows −

FILE *File pointer;

For example, FILE * fptr;

The syntax for naming a file is as follows −

File pointer = fopen ("File name", "mode");

For example,

fptr = fopen ("sample.txt", "r");
FILE *fp;
fp = fopen ("sample.txt", "w");

fgets( ) and fputs( ) functions

fgets() is used for reading a string from a file.

The syntax for fgets() function is as follows −

fgets (string variable, No. of characters, File pointer);

For example,

FILE *fp;
char str [30];
fgets (str,30,fp);

fputs() function is used for writing a string into a file.

The syntax for fputs() function is as follows −

fputs (string variable, file pointer);

For example,

FILE *fp;
char str[30];
fputs (str,fp);

C program for using fgets() and fputs() functions

#include <stdio.h>

int main() {
   FILE *fptr = fopen("sample.txt", "w");
   
   fputs("TutorialPoints
", fptr);
   fputs("C programming
", fptr);
   fputs("Question & Answers", fptr);
   
   fclose(fptr);
   
   fptr = fopen("sample.txt", "r");
   
   char string[30];
   
   while (fgets(string, 30, fptr) != NULL) {
      printf("%s", string);
   }
   
   fclose(fptr);
   
   return 0;
}

Output

When the above program is executed, it produces the following result −

TutorialPoints
C programming
Question & Answers