interval de timp_dani

#include <iostream>

using namespace std;

int main()
{
    int h1, h2, ht, m1, m2, mt, s1, s2, st;
    cout<<"Inttrroduceti primul interval de timp(ora, minut, secunda)"<<endl;
    cin>>h1>>m1>>s1;
    cout<<"Inttrroduceti al doila interval de timp(ora, minut, secunda)";
    cin>>h2>>m2>>s2;
    st=s1+s2;
    mt=m1+m2+st/60;
    st=st%60;
    ht=h1+h2+mt/60;
    mt=mt%60;

    cout<<"Intervalul de timp este:"<<ht<<"ore, "<<mt<<"minute, "<<st<<"secunde";
    return 0;