Question

Following are the most important file management functions available in C. Use any 6 of them in your program and show the output.

Function	purpose
fopen ()	Creating a file or opening an existing file
fclose ()	Closing a file
fprintf ()	Writing a block of data to a file
fscanf ()	Reading a block data from a file
getc ()	Reads a single character from a file
putc ()	Writes a single character to a file
getw ()	Reads an integer from a file
putw ()	Writing an integer to a file
fseek ()	Sets the position of a file pointer to a specified location
ftell ()	Returns the current position of a file pointer
rewind ()	Sets the file pointer at the beginning of a file

Write the C code here and run it.

Output:

Can you type code please. Ty

Answer 1

code:-

#include <stdio.h>
 
int main ()
{
   char name [20];
   int age, length;
   FILE *fp;
   fp = fopen ("test.txt","w");
   fprintf (fp, "%s %d", "Ranaveer", 5);
   length = ftell(fp); // Cursor position is now at the end of file
   /* You can use fseek(fp, 0, SEEK_END); also to move the 
      cursor to the end of the file */
   rewind (fp); // It will move cursor position to the beginning of the file
   fscanf (fp, "%d", &age);
   fscanf (fp, "%s", name);
   fclose (fp);
   printf ("Name: %s \n Age: %d \n",name,age);
   printf ("Total number of characters in file is %d", length);
   return 0;
}

output:-

Name: Ranaveer
Age: 5
Total number of characters in file is 10

File:-

Ranaveer 5