Code for viewing Calender of any year

/*This code is for viewing the calender of any year entered by the user.
Contributed by Rishi*/
#include<iostream>
using namespace std;
void month(int x)
{
    //Function to display the months of the entered year
if(x==1)
    cout<<"January ";
else if(x==2)
    cout<<"February ";
else if(x==3)
    cout<<"March ";
else if(x==4)
    cout<<"April ";
else if(x==5)
    cout<<"May ";
else if(x==6)
    cout<<"June ";
else if(x==7)
    cout<<"July ";
else if(x==8)
    cout<<"August ";
else if(x==9)
    cout<<"September ";
else if(x==10)
    cout<<"October ";
else if(x==11)
    cout<<"November ";
else if(x==12)
    cout<<"December ";
}
int checkLeap(int y)
{
    //Function to check leap year
    return (y%4==0)?((y%100==0)?((y%400==0)?(1):0):1):0;
}
int getFirstDay(int y)
{
    //Function to retrieve the first day of the year
        int x=6;
        for(int i=1600;i<y;i++)
        {
            if(checkLeap(i))x+=2;
            else x+=1;
            x=x>7?x-7:x;
        }
        return x;
}
int printCal(int x,int m,int leap,int y)
{
        //Will to return the monthS to function 
        cout<<"\t\t\t\t\t ";
        month(m);
        cout<<"%d\t\t\t\t\t"<<y;
        printf("\n");
        if(m==1||m==3||m==5||m==7||m==8||m==10||m==12)
        {
            m=31;
        }
        else
        {
            m=(m==2&&leap)?29:(m==2?28:30);
        }
        // Will print the days of the week
        cout<<"\tMON\tTUE\tWED\tTHU\tFRI\tSAT\tSUN"<<endl;
        int a=1;
        for(int i=0;i<=6;i++)
        {
            for(int j=1;j<=7;j++)
            {
                if(i!=0||i==0&&j>=x)
                {
                    cout<<"\t"<<a;
                    a++;
                }
                else
                {
                    cout<<"\t";
                }
                if(a==(m+1))
                {
                    a=j;
                    goto stop;
                }
            }
            cout<<endl;
        }
        stop:cout<<"";
        cout<<"\n\n\t\t***\t\n\n";
        return a+1;


    }
    void printCalendar(int y)
    {
        //Function to print calender
        int a=getFirstDay(y);
        for(int i=1;i<=12;i++)
        {
            a=printCal(a,i,checkLeap(y),y);
        }
    }
    void calling()
    {
    int t=1;
        do
        {
            int y;
            cout<<"Enter a year"<<endl;
            cin>>y;
            int c1=1;

            if(y>=1600&&y<=3000)
            {
                printCalendar(y);
                c1++;
            }
            else
            {
                cout<<"Enter a valid year"<<endl;
            }
            cout<<"Enter 1 to see calendar of  another year"<<endl;
            cin>>t;

        }while(t==1);
        if(t!=1)
            {
                cout<<"Hey thank you for seeing the calender"<<endl;
            }
    }
    int main()
    {
        calling();
    }