Program to copy a file

C program to copy file. If you have any doubts, let me know

#include <stdlib.h>

#include <stdio.h>
main()
{
   
FILE *source, *target;

char x, sourcef[100], targetf[100];
   printf("File to copy?");
     gets(sourcef);
   source=fopen(sourcef, "r"); 
   printf("Target File?");
      gets(targetf);
   target=fopen(targetf, "w");
       while((x=fgetc(source))!=EOF)
           fputc(x, target);
  printf("The file has been copied.");
}