Hello i been doing some program of my own, my program is to get the number of days paased in the year. I am having hard to get get the passed in the year. Now when i try to run and the output gives me "", i am really having hard time to get this right. For example if the user enters mm-dd-yythen the reamaing days passed in the year is Full code. Have a look at this little tutorial.
This displays sumwhich has not been calculated yet It then sets day and sumbut never uses those values. My guess is you are getting an "uninitialized" value.
I'm thinking what you really wanted was days - day of month not days - year by the way, you are using the variable "day" for two different purposes, screen input and calculation and that is a bad idea. Whoever has to support your code later will HATE you for it. Since there seems top be some confusion on your part, I would suggest a bit of refactoring. By making Month a nested class with members, name and days, You can simplify several parts of your code by storing the different months and their respective days in an array.
It's a very simple matter to take the month number and subtract 1 to get the right index in the array. This simplifies a number of areas in your code:. On a side note, the Checkdate function shouldn't be there.
You should be verifying the date when the data is entered. Also, unless you have a need to fulsh the stream it is very inefficient to use endl. You have to somehow format your date value. There are more basic problems with this code. I didn't walk through all of the code you posted but here are a few thoughts on what I'm seeing. Hope that helps. Edited 3 Years Ago by tinstaafl. Getting Started: Have something to contribute to this discussion?
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In this article i am going to write a program to get the number of days in a month of particular year. And Based on the entered month and year it will calculate the number of days in that month and total days in the year. It will also handle the number of days variation due to leap year by first checking whether the year is leap year or not and depending on that calculates the number of days in that year. Note : I have limited the year to be entered between to It means you can enter year between to But you can also change it as per your requirement.
Please enter year between to ". First Run. Second Run:. Third Run:. Tweet Share Share Share. Lalit Raghuvanshi Read More. Conversion Clean. Subscribe to: Post Comments Atom.Where d is the day, m is the month addressed in the date, y is the calendar year, and c is the century number. Each day of the week is given a number. For instance, Sunday is the first day of the week and is represented by 1, Monday by 2, and so on.
In a few calendars, the week begins with 1 as for Monday and 7 as Sunday, which is like the ISO standards calendar. These numbers are achieved using Modulo 7. We know that every year has days Except the leap year which has days. Every week has 7 days. Every month has 30 or 31 days except February which has 28 days in a common calendar year and 29 days in a leap year. So if January 1,was Monday, January 1,will fall on a Tuesday because was not a leap year. Though 11 months of a year have 30 or 31 days, some months begin exactly on the same day as some other month.
April starts on Friday, so does July April has 30 Days, May 31 days, and June has 30 days, which add up to Hence, July starts the same day as April does.Example: Calculate age in days, C++ Programming Lec 6/28
The good news is that we have a bunch of months that start on the same day as some other month of the year. Following these algorithms, Tomohiko Sakamoto developed an algorithm using the formula above for the determination of a day of a week, which also took into consideration the additional day in a leap year. January has 31 days, which if divided into a week of 7 days will give 7? This addition of an extra day every year is adjusted every 4 years as a leap year, that is, February 29th.
Considering the rules above, which work for all calendars for a leap year, we must divide a year by 4 to see if it is a leap year. With all the addition and subtraction, we accurately add that one day to the leap year. As we numbered the months from 1 to 12, for every month which has a value less than 3, which in our case would be January and February, subtract 1 from its original value so January becomes 0 and February become 1.
Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. I have written a C program that calculates number of days between two dates. Unfortunately, it doesn't compile properly. I don't know why. Can someone please help me fix the code?
I don't even get a chance to input my own date. There are two issues:- 1. In mainfirst. Incorrect usage of scanf. Also, always check the return value of input functions.
You will save time.
Unless the return code is as expected, do not trust inputs like first. A good compile warns about mis-matched formats. Either enable all compiler warnings or get a new compiler.
Could add year test in correct. Learn more. C program that calculates number of days between two dates Ask Question. Asked 4 years, 5 months ago.Sign in to comment. Sign in to answer this question. Unable to complete the action because of changes made to the page. Reload the page to see its updated state.
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C program to find number of days in month
MathWorks Answers Support. Open Mobile Search. Trial software. You are now following this question You will see updates in your activity feed. You may receive emails, depending on your notification preferences. How to find the day number of any year from a date? Golam Mostafa on 23 Jul Vote 0. Commented: Peter Perkins on 24 Jul Accepted Answer: Peter Perkins.
I am very new in programming and therefore it is probably a novice's question. I have to write a script that takes a number of day ddmonth mm and year yyyy values arranged in three separate columns of a MATLAB variable and gives the day number of the year e. Azzi Abdelmalek on 23 Jul Cancel Copy to Clipboard. Can you explain? I have a variable in the workspace containing all the data.
Column 1 stores the day ddcolumn 2 month mm and column 3 year yyyy. The day number is I need output of each date in a separate variable. Accepted Answer. Peter Perkins on 23 Jul Vote 1. If you are using Rb or later, the datetime data type allows you to compute the day of year using the day function:.
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Hi I have just started learning C language at University.
Calculate the number of days in a month
Now I am faced with a problem I just don't know how to solve. So far we have only used library and nothing else, also scanf is a topic we are going to learn next week. For now we just use printf for everything. I have learned how to say if a year is a leap year or not, however, my task is the next one: Need to create a program that reads in a date and prints out the next day date with output like this:.
My dilemma is that I have no idea on what operations to use or how to set the code to make sure that leap year is considered and for example if today's date is 28 2 the next date needs to be 1 3 because it wasn't leap year. The only library used is and there is no scanf yet with scanf yet So far I got this:.
After you add 1 to the day, check to see if that value is greater than the number of days in that month. If so, set the day to 1 and add 1 to the month. Then check if month is greater than 12, and if so set the month to 1 and add 1 to the year. As for determining the number of days in a month, all months except February have the same number of days whether or not the year is a leap year.
Right now you're checking if the year is a leap year for those other months. You can leave that check out and just check the month number. Consider a different flow. First find the days per month first, then test if at end of month, and end of year.
Other improvement would use helper functions, enumerated types and various defines. Yet this code seems to reflect OP's level. Learn more. C program that reads in a date and prints out the next day date Ask Question. Asked 2 years, 8 months ago. Active 11 months ago. Viewed 12k times. Ruslan Osmanov Kristyna Williams Kristyna Williams 11 1 1 gold badge 1 1 silver badge 1 1 bronze badge.
If you can't use scanf how do you plan on getting the input?
Print calendar for a given year in C++
You don't need to shout, however you do need to work on your question description since it says Need to create a program that reads in a date and your printf asks for input. Your formula for figuring out if it's a leap year isn't really correct. You may want to check into leap centuries. Active Oldest Votes. You should be using functions; you should only test for a leap year if you are dealing with February; you should be using scanf or similar to read the values to be processed — at the moment, you have to recompile the program to change the date.
Similarly for April, June, September and November? OTOH, if you learn about scanf next week, maybe you don't know about functions other than main … it will be easier to write readable code when you learn to write functions.Prerequisite : Find day of the week for given date.
Problem: To print the calendar of any given year. The program should be such that it can prints the calendar of any input year. Time Complexity — O 1.
It is same for any given year. Auxiliary Space — O 1. This article is contributed by Rachit Balweriar. If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.
See your article appearing on the GeeksforGeeks main page and help other Geeks. Please write comments if you find anything incorrect, or you want to share more information about the topic discussed above. Writing code in comment? Please use ide. Prerequisite : Find day of the week for given date Problem: To print the calendar of any given year. For e. A Function that returns the name of the month. Recommended Posts: Find the next identical calendar year Print day of week using Gregorian Calendar in java Calendar Functions in Python Set 1 calendarmonthisleap Program to check if a given year is leap year Calendar.