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C++ program to create a time class and perform the required operations :
#include<iostream>
using namespace std;
// Creating a class time...
class time{
int hour,minute;
public:
// Member functions of class time...
void initialize(int hr,int mi);
time sum(time t1,time t2);
void update(int val);
void display();
};
// Function definitions of the defined functions...
void time::initialize(int hr,int mi){
hour=hr;
minute=mi;
}
void time::update(int val){
minute+=val;
hour+=(minute/60);
minute%=60;
hour%=24;
}
time time::sum(time t1,time t2){
time t3;
t3.minute=t1.minute+t2.minute;
t3.hour=t1.hour+t2.hour;
t3.hour+=(t3.minute/60);
t3.minute%=60;
t3.hour%=24;
return t3;
}
void time::display(){
cout<<hour<<" hours and "<<minute<<" minutes";
}
int main()
{
int choice;
int hr,mi;
time t1,t2,t3;
int val;
cout<<"Choice : 1) Update the existing time by a certain value..\n 2) Find the sum of given two times..\n 3) Exit :P";
while(1){
cout<<"\nEnter your choice..";
cin>>choice;
if(choice==1){
cout<<"\nEnter the time to be updated in hours and minutes...( hour followed by minute ) ";
cin>>hr>>mi;
t1.initialize(hr,mi);
cout<<"\nEnter the increment value..";
cin>>val;
t1.update(val);
cout<<"\nThe new time is...";
t1.display();
cout<<endl;
}
else if(choice==2){
cout<<"\nEnter the first and second time one by one.. ( hour followed by minute )";
cin>>hr>>mi;
t1.initialize(hr,mi);
cin>>hr>>mi;
t2.initialize(hr,mi);
t3=t3.sum(t1,t2);
cout<<"\nThe sum of the times is.. ";
t3.display();
cout<<endl;
}
else{
break;
}
}
return 0;
}
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