Department of Artificial Intelligence and Machine Learning
Mini Project Phase- I
“C Project on Calendar”
Under the Supervision
Prof. A Manusha Reddy
Dept. of CSE, SOET
Presented By:
KAYAM SAI KRISHNA (22BBTCA077)
HARSHITH G H (22BBTCA061)
YASWANTH RAJU KONDURU (22BBTCA081)
DEVENDHAR YADAV (22BBTCA076)
OVERVIEW
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Introduction
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Program Structure
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Arrays for Month Names and Day Abbreviations
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Calculating Days in a Month
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Printing Calendar Components
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User Interaction and Menu-Driven Programs
Dynamic Calendar Generation in C
INTRODUCTION
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Purpose: Develops a C program for dynamic calendar generation.
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Functionality: Displays calendars for specific years and months.
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Overview: Unveiling the inner workings of the C program.
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Key Components: Understanding the code structure and logic.
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User Interaction: Interactive and user-friendly calendar generation.
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Focus: Exploration of the code behind dynamic calendar creation in C.
Program Structure
FUNCTIONS
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print Calendar Function :
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Responsible for printing the calendar for a specific year and month.
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Determines the number of days in the month based on conditions.
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Calculates the day of the week for the first day of the month.
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print Year Calendar Function :
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Displays calendars for all months in a given year.
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Calls the ‘printCalendar’ function for each month.
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Main Function :
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Implements a menu-driven program for user interaction.
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Allows users to view the entire year’s calendar or a specific month.
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Calls the appropriate functions based on user input.
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Arrays :
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Uses arrays to store month names (‘months[ ]’) and day abbreviations (‘days[ ]’).
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Conditional Statements :
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Utilizes conditional statements to determine the number of days in a month.
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Includes special conditions for February and leap years.
Flow Chart
START
Display Menu
User Input
(Yes) Year/ (No)
Month
View
Call printCalendar
Display Calendar
End
Arrays for Month Names and Day Abbreviations
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months[ ] :
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Usage: Represents an array storing month names.
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Implementation: Accessed based on the index to retrieve the corresponding
month name.
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Example: months[0] for January, months[1] for February, and so on.
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days[ ] :
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Usage: Represents an array storing day abbreviations.
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Implementation: Accessed based on the index to retrieve the corresponding
day abbreviation.
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Example: days[0] for Sunday, days[1] for Monday, and so on.
Calculating Days in a Month
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Logic for Handling Different Months and Leap Years:
1. Conditional Statements:
• Utilized to determine the number of days in a month.
• Example: Check if the month has 30, 31, or 28/29 days.
2. Handling February:
• Special conditions for February due to its varying number of days.
• Checks for leap years using conditional statements.
3. Leap Year Conditions:
• Checks if the year is a leap year.
• Leap years have 29 days in February; non-leap years have 28.
Printing Calendar Components
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Header :
• Representation: Displayed at the top of each calendar.
• Content: Includes the month and year.
• Implementation: Printed using a formatted header statement.
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Days of the Week:
• Representation: Displayed above the calendar grid.
• Content: Abbreviations for each day (Sun, Mon, Tue, ..., Sat).
• Implementation: Printed using a loop and array access.
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Calendar Grid:
• Representation: Displayed in a grid format.
• Content: Shows the days of the month.
• Implementation: Utilizes loops to populate the grid, considering the
day of the week and the number of days in the
month.
User Interaction and Menu-Driven Program
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main() Function:
• Role: Serves as the entry point for the program.
• Functionality: Implements a menu-driven approach for user interaction.
• Implementation: Contains a loop to repeatedly display the menu and handle user
choices.
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User Input Handling:
• scanf() Function: Used to capture user input.
• Menu Choices: Allows users to choose options such as viewing the entire year's
calendar or a specific month.
• Function Calls: Invokes the relevant functions based on user input.
Error Handling
• User Input Validation:
• Implementation: The program employs conditional statements to validate user inputs, ensuring
they fall within expected ranges.
• Example: Checks if the user's choice for the month is between 1 and 12, and if the year is within
a reasonable range.
• Invalid Month Handling:
• Scenario: If the user enters an invalid month (e.g., less than 1 or greater than 12).
• Handling: The program provides feedback, indicating that the input is invalid, and prompts the
user to enter a valid month.
• Invalid Year Handling:
• Scenario: If the user enters a non-numeric value or a year outside a reasonable range.
• Handling: The program detects invalid entries, informs the user about the error, and prompts
them to enter a valid numeric year.
• Graceful Exit:
• Scenario: If the user decides to exit the program at any point.
• Handling: The program gracefully exits, providing a message to the user, ensuring a smooth and
user-friendly experience.
