Program to add content to a file

Program to add content to a file and display the content before and after adding to a file.

#include<stdio.h>
#include<conio.h>
main()
{
FILE *fp1,*fp2;
char s,c;
clrscr();
printf("\n\n\t one.txt contents are \n\n");
/*prints contents of file1 on monitor*/
fp1=fopen("one.txt","r");
while((c=getc(fp1))!=EOF)
printf("%c",c);
fclose(fp1);
printf("\n\n\t two.txt contents before appending are \n\n");
/*prints contents of file2 on monitor before appending*/
fp2=fopen("two.txt","r");
while((c=getc(fp2))!=EOF)
printf("%c",c);
fclose(fp2);
/*appends contents of file1 to file2*/
fp1=fopen("one.txt","r");
fp2=fopen("two.txt","a");
while((c=getc(fp1))!=EOF)
putc(c,fp2);
fcloseall();
printf("\n\n\t two.txt contents after appending are \n\n");
/*prints contents of file2 on monitor after appending*/
fp2=fopen("two.txt","r");
while((c=getc(fp2))!=EOF)
printf("%c",c);
fclose(fp2);
}

Output: