AS2_3

#include<sys/file.h>
#include<sys/types.h>
#include<sys/stat.h>
#include<unistd.h>
#include<stdio.h>
int main()
{
  char f1[30],f2[30],t[100];
  int fd,s1,s2;
  printf("Enter existing file name: ");
  scanf("%s",f1);
  printf("Enter new file name: ");
  scanf("%s",f2);
  fd=open(f1,O_RDONLY,S_IRUSR);
  if(fd==-1)
    return 1;
  s1=read(fd,t,100);
  close(fd);
  fd=creat(f2,S_IWUSR);
  s2=write(fd,t,s1);
  close(fd);
  if(s1==s2)
    printf("Size of both files= %d bytes\n",s1);
  else
    printf("Size mismatch\n");
  return 0;
}