Year_Month_Day_v1.c

// Version 1
// Program that accepts days as integer
// and display total numbers of years, month and days.
// The condition is that the year is 365 days and the month is 30 days.

#include<stdio.h>

void main(void)
{
    int n, mem_n, NewNumber, days,months, years;    // variable declaration

// entering the number of days as an integer
    printf("\n Input an positive integer number = ");
    scanf("%d",&n);

// n changes over the course of the calculation,
// so we remember n in the mem_n because we need to print the results at the end.
    mem_n = n;

// First, we find out how many whole years are contained in n.
    years = n/365;

// We take so many years from n and this is our new n
    n = n-years*365;

// We now reckon how many months are in such a n
    months = n/30;

// We take so many months from n, and again this is new n
    n = n-months*30;

// n now represents the number of days remaining
    days = n;

// display results
    printf("\n %d days is %d years %d months and %d days \n\n",mem_n,years,months,days);
}