C program to convert days to years weeks and days

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C program to convert days to years weeks and days

Write a C program to input number of days from user and convert it to years, weeks and days. How to convert days to years, weeks in C programming. Logic to convert days to years, weeks and days in C program.

Required knowledge

Data Types in c, Input/Output in C, Operators, Variables in C

Days conversion formula

1 year = 365 days (Ignoring leap year)

1 week = 7 days

Using this we can define our new formula to compute years and weeks.

year = days / 365

week = (days - (year * 365)) / 7

Logic to convert days to years weeks and days

Step by step descriptive logic to convert days to years, weeks and remaining days -

1. Input days from user. Store it in some variable say days.
2. Compute total years using the above conversion table. Which is years = days / 365.
3. Compute total weeks using the above conversion table. Which is weeks = (days - (year * 365)) / 7.
4. Compute remaining days using days = days - ((years * 365) + (weeks * 7)).
5. Finally print all resultant values years, weeks and days.

Program to convert days to years, weeks and days

/**
 * C program to convert days in to years, weeks and days
 */

#include <stdio.h>

int main()
{
    int days, years, weeks;

    /* Input total number of days from user */
    printf("Enter days: ");
    scanf("%d", &days);

    /* Conversion */
    years = (days / 365);   // Ignoring leap year
    weeks = (days % 365) / 7;
    days  = days - ((years * 365) + (weeks * 7));

    /* Print all resultant values */
    printf("YEARS: %d\n", years);
    printf("WEEKS: %d\n", weeks);
    printf("DAYS: %d", days);

    return 0;
}

Output:

Enter days: 373
YEARS: 1
WEEKS: 1
DAYS: 1

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