C++primer plus第六版课后编程练习答案3.4

#include<iostream>
#include<stdio.h>
using namespace std;

void main()
{
long sec;
cout<<"Enter the number of seconds:";
cin>>sec;
int days,hours,minutes,seconds;
days=sec/(24*60*60);
hours=(sec%(24*60*60))/(60*60);
minutes=(sec%(60*60))/60;
seconds=sec%60;

cout<<sec<<" seconds= "<<days<<" days, "<<hours<<" hours, "<<minutes<<" minutes, "<<seconds<<" seconds.\n";
}