程序代码：

     April 2011
Su Mo Tu We Th Fr Sa
                1  2

 3  4  5  6  7  8  9
10 11 12 13 14 15 16
17 18 19 20 21 22 23
24 25 26 27 28 29 30

程序代码：

int main()
{
    cout<<"\t\tApril 2011\n";
    cout<<"Su\tMo\tTu\tWe\tTh\tFr\tSa\n";
    int Date=1,PrevMonthDay=5;
    while (Date-PrevMonthDay<=30)
    {
        if (Date-PrevMonthDay>0)
            cout<<Date-PrevMonthDay<<"\t";
        else
            cout<<"\t";
        if (Date%7==0)
            cout<<"\n";
        Date++;
    }
    return 0;
}