56.To merge two files

#include <stdio.h>

#include <stdlib.h>

int main()

{

   FILE *fs1, *fs2, *ft;

   char ch, file1[20], file2[20], file3[20];

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

   gets(file1);

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

   gets(file2);

   printf("Enter name of file which will store contents of two files\n");

   gets(file3);

   fs1 = fopen(file1,"r");

   fs2 = fopen(file2,"r");

   if( fs1 == NULL || fs2 == NULL )

   {

      perror("Error ");

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

      getch();

      exit(EXIT_FAILURE);

   }

   ft = fopen(file3,"w");

   if( ft == NULL )

   {

      perror("Error ");

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

      exit(EXIT_FAILURE);

   }

   while( ( ch = fgetc(fs1) ) != EOF )

      fputc(ch,ft);

   while( ( ch = fgetc(fs2) ) != EOF )

      fputc(ch,ft);

   printf("Two files were merged into %s file successfully.\n",file3);

   fclose(fs1);

   fclose(fs2);

   fclose(ft);

   return 0;

}