#include <stdio.h>
#include <stdlib.h> // For exit()

int main()
{
FILE fptr1,fptr2;
char filename[100], c;

printf("Enter the filename to open for reading \n");
scanf("%s", filename);

// Open one file for reading
fptr1 = fopen(filename, "r");
if (fptr1 == NULL)
{
printf("Cannot open file %s \n", filename);
exit(0);
}

printf("Enter the filename to open for writing \n");
scanf("%s", filename);

// Open another file for writing
fptr2 = fopen(filename, "w");
if (fptr2 == NULL)
{
printf("Cannot open file %s \n", filename);
exit(0);
}

// Read contents from file
c = fgetc(fptr1);
while (c != EOF)
{
fputc(c, fptr2);
c = fgetc(fptr1);
}

printf("\nContents copied to %s", filename);

fclose(fptr1);
fclose(fptr2);
return 0;
}