55. To copy files

#include <stdio.h>

#include <stdlib.h>

int main()

{

   char ch, source_file[20], target_file[20];

   FILE *source, *target;

   printf("Enter name of file to copy\n");

   gets(source_file);

   source = fopen(source_file, "r");

   if( source == NULL )

   {

      printf("Press any key to exit...\n");

      exit(EXIT_FAILURE);

   }

   printf("Enter name of target file\n");

   gets(target_file);

   target = fopen(target_file, "w");

   if( target == NULL )

   {

      fclose(source);

      printf("Press any key to exit...\n");

      exit(EXIT_FAILURE);

   }

   while( ( ch = fgetc(source) ) != EOF )

      fputc(ch, target);

   printf("File copied successfully.\n");

   fclose(source);

   fclose(target);

   return 0;

}