Merge two files in C

/*
Wriate a Program in C to merge two files.
*/
#include<stdio.h>
#include<conio.h>
#include<stdlib.h>

main()
{
FILE *fs1, *fs2, *ft;

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

printf("Enter name of first file ");
gets(file1);

printf("Enter name of second file ");
gets(file2);

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

getch();
return 0;
}