Thread: validating a magic date

H! I am making a program which takes date month and year as input and validates that whether the given date is a magic date or not the criteria for magic date is
1)if month*date is one digit number and it is equal to last digit of the year it is a magic date for example 02,03,2006.
2)if month*date is a two digit number and it is equal to last two digits of the year it is a magic date for example 09,02,2018
3)if month*date is a three digit number and it is equal to last three digits of the year it is a magic date for example 30,10,2300.

now programs requirements are that the input year should be of four digits and this program should be made by using switch statement.

problem: i have made this program using if else but i dont understand how can i make it using switch statement.

(PROGRAM USING IF-ELSE):

Code:

#include<iostream>
using namespace std;
int main()
{
    int dd,mm,yyyy,a,b,c,d;
    cout<<"enter date ";
    cin>>dd;
    if(dd<=0||dd>31)
        cout<<"invalid date";
    else{
    cout<<"enter month ";
    cin>>mm;}
    if(mm<=0||mm>12)
        cout<<"invalid month";
    else{
    cout<<"enter year ";
    cin>>yyyy;}
    if(yyyy<1000||yyyy>9999)
        cout<<"invlaid year range ";
    if(yyyy%10==(mm*dd))
        cout<<"special date"<<endl;
    else if(yyyy%100==(mm*dd))
        cout<<"special date"<<endl;
    else if(yyyy%1000==(mm*dd))
        cout<<"special date"<<endl;
    else 
        cout<<"not a special date"<<endl;
    system("pause");
    return 0;
}