Simple Calculator: Create a basic calculator program that can perform arithmetic operations like addition, subtraction, multiplication, and division.
To-Do List Manager: Develop a program to manage a to-do list, allowing users to add tasks, mark them as completed, and remove them from the list.
Student Grade Tracker: Build a system to input and track students' grades for various subjects. You can add features like calculating average grades, highest/lowest scores, and generating progress reports.
Library Management System: Design a program to manage a library's inventory, including functions to add new books, check out books to patrons, and search for books by title or author.
Text-Based Adventure Game: Create an interactive text-based game where players navigate through a story by making choices. You can include features like branching storylines, character interactions, and inventory management.
Bank Account Manager: Develop a program to simulate a bank account system, allowing users to create accounts, deposit/withdraw funds, check balances, and view transaction history.
Simple Database System: Build a basic database management system that can store and retrieve data. You can implement features like creating tables, inserting records, querying data, and updating/deleting records.
Inventory Tracker: Create a program to manage inventory for a small business. It should allow users to add new items, track quantities, update stock levels, and generate reports.
Weather Forecast Application: Develop an application that retrieves weather data from an API and displays forecasts for different locations. You can include features like current weather conditions, hourly forecasts, and multi-day predictions.
Chess Game: Implement a text-based chess game where players can make moves using standard algebraic notation. You can add features like checking for legal moves, detecting checkmate, and implementing basic AI for single-player mode.
Choose a project that interests you and fits your skill level, and have fun experimenting with Pascal programming!

 How to makeSimple Calculator in pascal programming 
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Here's a simple example of how you can create a basic calculator in Pascal programming:

pascal
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program SimpleCalculator;

var
    num1, num2, result: real;
    operator: char;

begin
    writeln('Simple Calculator');
    writeln('-----------------');
    writeln('Enter the first number: ');
    readln(num1);
    
    writeln('Enter the second number: ');
    readln(num2);
    
    writeln('Enter the operation (+, -, *, /): ');
    readln(operator);
    
    case operator of
        '+': result := num1 + num2;
        '-': result := num1 - num2;
        '*': result := num1 * num2;
        '/': 
            begin
                if num2 <> 0 then
                    result := num1 / num2
                else
                begin
                    writeln('Error: Division by zero');
                    halt; // Terminate the program
                end;
            end;
        else
            begin
                writeln('Error: Invalid operator');
                halt; // Terminate the program
            end;
    end;
    
    writeln('Result: ', result:0:2);
    
end.

Pascal online compiler

Write, Run & Share Pascal code online using OneCompiler’s Pascal online compiler for free. It’s a straightforward, accessible way to learn and experiment with Pascal programming right from your browser. OneCompiler supports modern Pascal syntax and provides a ready-to-use editor for immediate execution.

About Pascal

Pascal is a procedural programming language developed in the 1970s by Niklaus Wirth. It was designed to encourage good programming practices and structured programming. Pascal is widely used in teaching computer science fundamentals and has influenced many modern languages.

Sample Code

The following is a simple Pascal program that prints a greeting:

program HelloWorld;
begin
  writeln('Hello, OneCompiler!');
end.

Taking inputs (stdin)

OneCompiler’s Pascal editor supports stdin through the I/O tab. Here’s an example that reads a user's name and prints a greeting:

program GreetUser;
var
  name: string;
begin
  readln(name);
  writeln('Hello, ', name, '!');
end.

Syntax Basics

Variables

var
  age: integer;
  name: string;
  score: real;
  flag: boolean;

Data Types

TypeDescription
integerWhole numbers
realFloating-point numbers
charSingle character
stringSequence of characters
booleanTrue or False

Conditionals

if score >= 50 then
  writeln('Pass')
else
  writeln('Fail');

Loops

For loop

for i := 1 to 5 do
  writeln(i);

While loop

i := 1;
while i <= 5 do
begin
  writeln(i);
  i := i + 1;
end;

Repeat-Until loop

i := 1;
repeat
  writeln(i);
  i := i + 1;
until i > 5;

Procedures and Functions

procedure SayHello;
begin
  writeln('Hello!');
end;

function Add(a, b: integer): integer;
begin
  Add := a + b;
end;

This guide provides a quick reference to Pascal programming syntax and features. Start coding in Pascal using OneCompiler’s Pascal online compiler today!