Copy One File to Another

/* Write a C program which copies one file to another.*/

#include <stdio.h>

#include <conio.h>

#include <process.h>

void main(int argc, char *argv[])

{

 FILE *fs,*ft;

 char ch;

 clrscr();

 if(argc!=3)

 {

  puts("Invalid number of arguments.");

  exit(0);

  }

 fs = fopen(argv[1],"r");

 if(fs==NULL)

 {

 puts("Source file cannot be opened.");

 exit(0);

 }

 ft = fopen(argv[2],"w");

 if (ft==NULL)

 {

 puts("Target file cannot be opened.");

 fclose(fs);

 exit(0);

 }

 while(1)

 {

  ch=fgetc(fs);

  if (ch==EOF)

  break;

  else

  fputc(ch,ft);

  }

  fclose(fs);

  fclose(ft);

  getch();

}