This tutorial will help you write a program in C, C++, Python, and Java to convert the number of days into years, months, weeks, and days.

We know that 1 year = 365 days, 52 weeks, and 12 months. However, if we say 406 days, it becomes 1 year, 1 month, 1 week, and 4 days. Let us see mathematically how to convert the number of days into years, months, weeks, and days.

- Initially, divide the number of days by 365, i.e., the number of days/365. The quotient will be the number of years. Use the mod operator (%) to get the remaining days.
- Divide the number of remaining days obtained in Step 1 by 30. The quotient will be the number of days. Again, use the mod operator to get the remaining days.
- Divide the number of remaining days obtained in Step 2 by 7. The quotient will be the number of days, and the remaining days will be the number of days.

Now, we know the approach. Let us implement it in a program.

##
**
C Program to Convert Days into Years, Months, Weeks, and Days
**

```
#include<stdio.h>
int main()
{
int days,temp1,temp2,week,mon,year,d;
printf("Enter the days: ");
scanf("%d", &days);
year = days/365;
temp1= days%365;
mon = temp1/30;
temp2 = temp1%30;
week = temp2/7;
d = temp2%7;
printf("The number of years is: %d", year);
printf("\nThe number of months is: %d", mon);
printf("\nThe number of weeks is: %d", week);
printf("\nThe number of days is: %d", d);
return 0;
}
```

**
Output:
**

```
Enter the days: 3456
The number of years is: 9
The number of months is: 5
The number of weeks is: 3
The number of days is: 0
```

##
**
C++ Program to Convert Days into Years, Months, Weeks, and Days
**

```
#include<iostream>
using namespace std;
int main()
{
int days,temp1,temp2,week,mon,year,d;
cout<<"Enter the days: ";
cin>>days;
year = days/365;
temp1= days%365;
mon = temp1/30;
temp2 = temp1%30;
week = temp2/7;
d = temp2%7;
cout<<"The number of years is: "<<year;
cout<<"\nThe number of months is: "<<mon;
cout<<"\nThe number of weeks is: "<<week;
cout<<"\nThe number of days is: "<<d;
return 0;
}
```

**
Output:
**

```
Enter the days: 4567
The number of years is: 12
The number of months is: 6
The number of weeks is: 1
The number of days is: 0
```

##
**
Python Program to Convert Days into Years, Months, Weeks, and Days
**

```
days = int(input("Enter the days: "))
year = days//365
temp1 = days%365
mon = temp1//30
temp2 = temp1%30
week = temp2//7
d = temp2%7
print("The number of years is:",year)
print("The number of months is:",mon)
print("The number of weeks is:",week)
print("The number of days is:",d)
```

**
Output:
**

```
Enter the days: 3214
The number of years is: 8
The number of months is: 9
The number of weeks is: 3
The number of days is: 3
```

##
**
Java Program to Convert Days into Years, Months, Weeks, and Days
**

```
import java.util.*;
public class Main
{
public static void main(String[] args)
{
int days,temp1,temp2,week,mon,year,d;
Scanner sc = new Scanner(System.in);
System.out.println("Enter the days: ");
days = sc.nextInt();
year = days/365;
temp1= days%365;
mon = temp1/30;
temp2 = temp1%30;
week = temp2/7;
d = temp2%7;
System.out.println("The number of years is: " +year);
System.out.println("The number of months is: " +mon);
System.out.println("The number of weeks is: " +week);
System.out.println("The number of days is: " +d);
}
}
```

**
Output:
**

```
Enter the days:
4567
The number of years is: 12
The number of months is: 6
The number of weeks is: 1
The number of days is: 0
```

##
**
Conclusion
**

That's it! We have written a program in C, C++, Python, and Java to convert the number of days into years, months, weeks, and days. It is important to note that we wrote the above programs considering 365 days in a year. It is not valid for leap years. For more accurate calculations, you need to consider the leap years and the varying month lengths.

**
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