Update date_lab.cpp

date_lab.cpp

@@ -1,75 +1,150 @@
+/*
+1.Define a class Date. Overload the operator '+' such that it adds a given date with certain number of days.
+*/
 #include <iostream>
 using namespace std;
+class dates
+{
+  int day, month, year, last;
+  int mo[12] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
+
+public:
+  int key;
+  dates() {}
+  dates(int d, int m, int y)
+  {
+    day = d;
+    month = m;
+    year = y;
+  }
+  void outPut();
+  dates operator+(dates d);
 
-class dates {
-  private:
-    int day, month, year, last;
-  public:
-    void input();
   void Month();
   void Day();
-  void output();
-  void valid();
+  int valid();
 };
-
-void dates::input() {
-  cout << "\nEnter the Date DD MM YYYY :";
-  cin >> day >> month >> year;
+void dates::outPut()
+{
+  cout << "Result is = " << day << "/" << month << "/" << year << endl;
 }
-//Month
-void dates::Month() {
-  if (month > 0 && month <= 12) {
-    if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12) {
+
+//validty
+void dates::Month()
+{
+  if (month > 0 && month <= 12)
+  {
+    if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12)
+    {
       last = 31;
       Day();
-    } else if (month == 4 || month == 6 || month == 9 || month == 11) {
+    }
+    else if (month == 4 || month == 6 || month == 9 || month == 11)
+    {
       last = 30;
       Day();
-    } else if (month == 2) {
-      if ((year % 4 == 0) && (year % 100 != 0) || (year % 400 == 0)) {
+    }
+    else if (month == 2)
+    {
+      if ((year % 4 == 0) && (year % 100 != 0) || (year % 400 == 0))
+      {
         last = 29;
         Day();
-      } else {
+      }
+      else
+      {
         last = 28;
         Day();
       }
     }
-  } else
-    cout << "Invalid";
+  }
+  else
+    cout << "Invalid Date";
 }
 //Day
-void dates::Day() {
-  if (day > 0 && day <= last) {
+void dates::Day()
+{
+  if (day > 0 && day <= last)
+  {
     valid();
+  }
+  else
+    cout << "Invalid Date";
+}
 
-  } else
-    cout << "Invalid";
+int dates::valid()
+{
+  key = 1;
+  return key;
+
 }
-//output
-void dates::output() {
-  if (day == last) {
-    if (month == 12) {
-      day = 1;
-      month = 1;
-      year++;
-    } else {
-      day = 1;
+
+dates dates::operator+(dates d)
+{
+  dates m;
+  int i;
+  m.day = day + d.day;
+  i = month - 1;
+  m.month = 0;
+  m.year = year;
+  if (i == 1)
+  {
+    if ((m.year % 4 == 0) && (m.year % 100 != 0) || (m.year % 400 == 0))
+    {
+      mo[1] = 29;
+    }
+  }
+  if ((m.day - mo[i]) > 0)
+  {
+    while ((m.day - mo[i]) > 0)
+    {
+      if ((m.year % 4 == 0) && (m.year % 100 != 0) || (m.year % 400 == 0))
+      {
+        mo[1] = 29;
+      }
+      m.day = m.day - mo[i];
       month++;
+      i++;
+      if ((month - 1) % 12 == 0)
+      {
+        i = 0;
+        m.year++;
+      }
+    }
+    if (month > 12)
+    {
+      if (month % 12 == 0)
+        m.month = 12;
+      else
+        m.month = month % 12;
     }
-  } else if (day != last) {
-    day++;
+    else
+      m.month = month;
+    i++;
   }
-  cout << day << "/" << month << "/" << year;
-}
-//valid
-void dates::valid() {
-  cout << "\n Valid \n";
-  output();
+  else
+  {
+    m.month = month;
+    m.year = year;
+  }
+
+  return m;
 }
 
-int main() {
-  dates d;
-  d.input();
-  d.Month();
+int main()
+{
+  int d, m, y, n;
+  cout << "Enter the date\n";
+  cin >> d >> m >> y;
+  cout << "Enter the day to be added \n";
+  cin >> n;
+  dates d1(d, m, y), d2(n, 0, 0), d3;
+  d1.Month();
+  if (d1.key == 1)
+  {
+    d3 = d1 + d2;
+    d3.outPut();
+  }
+
   return 0;
 }