Question

Write a program that takes a date as input and outputs the date's season. The input is a string to represent the month and an int to represent the day. Ex: If the input is: April 11 the output is: Spring In addition, check if the string and int are valid (an actual month and day). Ex: If the input is: Blue 65 the output is: Invalid The dates for each season are: Spring: March 20 - June 20 Summer: June 21 - September 21 Autumn: September 22 - December 20 Winter: December 21 - March 19

It is coded in c++

Answer 1

CODE:

#include<iostream>
using namespace std;

int main (){

   string Month_input
   int day_input,m_num;
   bool Mflag = false,Dflag=false;//we use boolean flags to save the validity or invalidity of month or day with Mflag and Dflag resp.
   cin>>Month_input>>day_input;
//checking if input month and day is valid or not
//we need to check if the user has input the right date for February or not as February does not have more than 29 days(incl.leap year)
//we also need to check if the user does not exceed the month-end dates. For example April 31 is an invalid input.
   if(Month_input=="January"&&day_input>=1&&day_input<=31){
       Mflag=true;Dflag=true;m_num=1;
   }
   else if(Month_input=="February"&&day_input>=1&&day_input<=29){//including leap year
       Mflag=true;Dflag=true;m_num=2;
   }
   else if(Month_input=="March"&&day_input>=1&&day_input<=31){
       Mflag=true;Dflag=true;m_num=3;
   }
   else if(Month_input=="April"&&day_input>=1&&day_input<=30){
       Mflag=true;Dflag=true;m_num=4;
   }
   else if(Month_input=="May"&&day_input>=1&&day_input<=31){
       Mflag=true;Dflag=true;m_num=5;
   }
   else if(Month_input=="June"&&day_input>=1&&day_input<=30){
       Mflag=true;Dflag=true;m_num=6;
   }
   else if(Month_input=="July"&&day_input>=1&&day_input<=31){
       Mflag=true;Dflag=true;m_num=7;
   }
   else if(Month_input=="August"&&day_input>=1&&day_input<=31){
       Mflag=true;Dflag=true;m_num=8;
   }
   else if(Month_input=="September"&&day_input>=1&&day_input<=30){
       Mflag=true;Dflag=true;m_num=9;
   }
   else if(Month_input=="October"&&day_input>=1&&day_input<=31){
       Mflag=true;Dflag=true;m_num=10;
   }
   else if(Month_input=="November"&&day_input>=1&&day_input<=30){
       Mflag=true;Dflag=true;m_num=11;
   }
   else if(Month_input=="December"&&day_input>=1&&day_input<=31){
       Mflag=true;Dflag=true;m_num=12;
   }
//if and only if both month and day inputs are valid, season will be checked, otherwise it will output invalid
   if(Dflag==true&&Mflag==true){
   //we need to use month number in switch case as switch case does not work on strings in C/C++

       switch(m_num){

       case 1:   cout<<"Winter";
               break;
       case 2: cout<<"Winter";
               break;
       case 3: if(day_input<=19)cout<<"Winter";
               else cout<<"Spring";
               break;
       case 4: cout<<"Spring";
               break;
       case 5: cout<<"Spring";
               break;
       case 6: if(day_input<=20)cout<<"Spring";
               else cout<<"Summer";
               break;
       case 7: cout<<"Summer";
               break;
       case 8: cout<<"Summer";
               break;
       case 9: if(day_input<=21)cout<<"Summer";
               else cout<<"Autumn";
               break;
       case 10: cout<<"Autumn";
               break;
       case 11: cout<<"Autumn";
               break;
       case 12: if(day_input<=20)cout<<"Autumn";
               else cout<<"Winter";
               break;          
       }

   }
   else cout<<"Invalid";

}

OUTPUT:

CODE SCREENSHOT:

NOTE: I have assumed that the month input starts with an upper case. You may make changes in the above-mentioned code accordingly to accept the input of your own choice. In case the input starts with a lower case you can add an extra or condition to compare with lowercased months or all caps. For example:

month_input=="June" || month_input=="june" || month_input=="JUNE"...so on