You can produce the expected output with
#include <iostream>
using namespace std;
int main()
{
int week, day;
cout << "Enter No. of days:";
cin >> day;
week = (day - 1) / 7 + 1;
day = (day - 1) % 7 + 1;
cout <<"\nWeeks: "<<week<<"\nDays: "<<day << endl;
}
solved Program to convert given number of days in terms of Weeks and Days [closed]