C++ File Programs

#include <iostream>
#include <stdio.h>
using namespace std;
main()
{ 
char a[10],b[10],c[20];
cout<<"\nPlease Enter Your Name : ";
cin>>a;
cout<<"\nPlease Enter Your Last Name : ";
cin>>b;
cout<<"\nPlease Enter Your Address : ";
cin>>c;
FILE *fp;
fp=fopen("file.txt","w");
fputs(" Name: ",fp);
fputs(a,fp);
fputs(",",fp);
fputs(" Last Name: ",fp);
fputs(b,fp);
fputs(",",fp);
fputs(" Address: ",fp);
fputs(c,fp);
fclose(fp);
}