Program To Convert NST Nepali time to GMT ( C++ )

Program To Convert NST Nepali time to GMT ( C++ ) using Object Class Concept
#include<iostrem.h>
 #include<conio.h> 
 class time
 { 
public: int h,m,s; 
void enternptime()
 { 
cout<<"enter the time of Nepal in 24 hours Format";
 cin>>h>>m>>s;
 } 
 };
 void main()
 { 
 clrscr(); 
 time a,b;
 a.enternptime();
 b.h=a.h+5;
 b.m=a.m+45; 
 if(b.m>60) 
 {
 b.h=b.h+1; 
 b.m=b.m-60;
 }
if(b.m>24) 
 {

 b.m=24-b.m;
 }

 cout<<" the time in GMT is"<<b.h<<":"<<b.m<<":"<<b.s;
 getch();
 }