// Dev-C++ Function file:  numberOfDays.cpp
/* This function receives an integer month, day,
   and four digit year and returns an integer
   representing the number of days since 
   January 1, 1900.
   Written by Doug Clay
*/

int numberOfDays(int m, int d, int y)
{
    int daysInMonths[] = {0,0,31,28,31,30,31,30,31,31,30,31,30,31};
    int dayTotal = 0;
    int numberOfYears;
    int yearTotal;
    int leapTotal;
    int totalDays;
    
    for (int i = 1; i <= m; ++i)
        dayTotal += daysInMonths[i];
    numberOfYears = y - 1900;
    yearTotal = (y - 1900) * 365;
    leapTotal = numberOfYears / 4 + 1;
    totalDays = dayTotal + yearTotal + leapTotal + d;
    if (m <= 2 && y%4 == 0)
        --totalDays;
    return totalDays;
}