A popular horoscope kind of thing is to get a person’s lucky number from his/her

Question

A popular horoscope kind of thing is to get a person’s lucky number from his/her date of birth. This is accomplished by adding together all the digits in the day, month, and year of the birthdate, then repeat the process until there is a single digit, which will be in the range of 1 to 9, inclusive. For example, if the date is 21-Nov-1995, the process is as follows:

21: 2 + 1 = 3

11: 1 + 1 = 2

1995: 1 + 9 + 9 + 5 = 24: 2 + 4 = 6

and then,

3 + 2 + 6 = 11: 1 + 1 = 2

Thus, the lucky number of this date is 2.

Write a function called ‘sumDigits’ that has one parameter of type int, and returns the sum of the digits in its parameter. For example, sumDigits(35) will return 3+5 which is 8.

Write a program that asks the user for an input file name containing dates specified in the following format dd-mmm-yyyy. The program will read the dates one at a time, breaks-up the date into three parts (day, month, and year), converts the month into a numeric value(1 through 12), and then calls the method ‘sumDigits’ at least four times to compute the lucky number corresponding to that date.

Include a loop in the program that allows the user to repeat this process as often as he/she wishes.

Sample input and output: The output of your program must exactly match the format shown below.

Programmer:    Name of the programmer(s)

Course:            COSC 111, Fall 2015

Lab#:               Take Home Project 2

Due date:         Dec. 10, 2015

Enter an input file name: hp2A.txt

Lucky number for ‘21-Nov-1995’ is: 2

Lucky number for ‘18-Jan-2001’ is: 4

Lucky number for ‘12-Mar-1975’ is: 1

Do it again, yes (or no)? YES

Enter an input file name: hp2B.txt

Lucky number for ‘11-Apr-2013’ is: 3

Lucky number for ‘23-Apr-2013’ is: 6

Lucky number for ‘1-Jan-2014’ is: 9

Lucky number for ‘9-Dec-1999’ is: 4

Do it again, yes (or no)? YES

Enter an input file name: hp2C.txt

Sorry, ‘hp2C.txt’ doesn’t exist

Do it again, yes (or no)? no

Explanation / Answer

#include <stdio.h>
#include <stdlib.h>
#include <fstream>
#include <iostream>
#include <cstring>

#define MAX 1000

using namespace std;

int sum(int i)
{
int result=0;
while(i>0)
{
result += i%10;
i /= 10;
}

if(result>9)
return sum(result);
else
return result;
}

int Lucky_number(string date)
{
string month = date.substr(3,3);
string day = date.substr(0,2);
string year = date.substr(7,4);
int m,d,y,total;

if(month == "Jan")
m = 1;
else if(month == "Feb")
m = 2;
else if(month == "Mar")
m = 3;
else if(month == "Apr")
m = 4;
else if(month == "May")
m = 5;
else if(month == "Jun")
m = 6;
else if(month == "Jul")
m = 7;
else if(month == "Aug")
m = 8;
else if(month == "Sep")
m = 9;
else if(month == "Oct")
m = 10;
else if(month == "Nov")
m = 11;
else if(month == "Dec")
m = 12;

m = sum(m);
d = sum(atoi(day.c_str()));
y = sum(atoi(year.c_str()));
total = m+d+y;
return sum(total);
}

int main()
{

cout<<"Programmer: XYZ ";
cout<<"Course: COSC 111,Fall 2015 ";
cout<<"Lab# Take Home Project2 ";
cout<<"Due date: Dec.10 2015 ";
ifstream infile;
string input_file,row,response = "yes";

while(response!="no")
{
cout<<"Enter the input file name::";
cin>>input_file;

infile.open(input_file.c_str());

if (!infile.is_open())
cout<<"Sorry, "<<input_file<<" doesn't exist ";

while(infile>>row)
cout<<"Lucky number for "<<row<<" is :: "<<Lucky_number(row)<<endl;

cout<<"Do it again, (yes or no)? ";
cin>>response;

infile.close();

}

return 1;
}

/*
Input file should of this format
21-Nov-1995
18-Jan-2001
12-Mar-1975
*/

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