# C Exercises: Convert specified days into years, weeks and days

## C Basic Declarations and Expressions: Exercise-8 with Solution

Write a C program to convert specified days into years, weeks and days.

**Pictorial Presentation:**

Note: Ignore leap year.

Test Data :

Number of days : 1329

**C Code:**

```
#include <stdio.h>
int main()
{
int days, years, weeks;
days = 1329; // Total number of days
// Converts days to years, weeks and days
years = days/365; // Calculate years
weeks = (days % 365)/7; // Calculate weeks
days = days - ((years*365) + (weeks*7)); // Calculate remaining days
// Print the results
printf("Years: %d\n", years);
printf("Weeks: %d\n", weeks);
printf("Days: %d \n", days);
return 0;
}
```

**Explanation:**

In the exercise above -

- The program includes the standard input/output library <stdio.h>.
- It declares three integer variables:
- int days: This variable stores the total number of days to be converted.
- int years: It stores the calculated number of years.
- int weeks: It stores the calculated number of weeks.
- The program initializes the 'days' variable with 1329.
- It then converts:
- years = days / 365: This division calculates the number of years in the given number of days. Since there are approximately 365 days in a year, this division gives an estimate of the number of years.
- weeks = (days % 365) / 7: After calculating the years, the program uses the modulo operator % to find the remaining days that couldn't be represented in full years. It then divides this remainder by 7 to calculate the number of weeks.
- Finally, it subtracts the days accounted for by years and weeks to get the remaining days.
- The program uses printf statements to display the calculated values:
- It prints the number of years with the message: "Years: [years]."
- It prints the number of weeks with the message: "Weeks: [weeks]."
- It prints the remaining days with the message: "Days: [days]."
- The program returns 0 to indicate successful execution.

Sample Output:

Years: 3 Weeks: 33 Days: 3

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