Deadline: 11th of Aban - Friday - 23:59 o'clock
- Submission Method: Submit your
.csource files via your account at courses.aut.ac.ir. - File Naming Convention: Zip everything and for naming, use this template.
StudentNumber_HW1.zip - Plagiarism Notice: All submissions must be your own work. Plagiarism will result in disciplinary action.
- Sign of a Number
- Simple Calculator
- Triangle Type Checker
- Quadrant Finder
- Currency Denomination Calculator
- Distance Between Two Points
Write a C program that determines whether a given number is positive, negative, or zero. The program should prompt the user to enter a number and then display a message indicating the sign of the number.
Example 1
Enter a number: 25
The number is positive.
Example 2
Enter a number: -7.5
The number is negative.
Example 3
Enter a number: 0
The number is zero.
- Zero: Ensure your program correctly identifies zero as neither positive nor negative.
- Floating-Point Numbers: The program should handle both integers and floating-point numbers.
- Invalid Input: You may assume that the user enters a valid number. Handling invalid inputs is not required for this assignment.
Create a C program that functions as a simple calculator. The program should:
- Prompt the user to enter two numbers.
- Ask the user to choose an arithmetic operation: addition (+), subtraction (-), multiplication (*), or division (/).
- Perform the chosen operation and display the result.
Example 1
Enter first number: 10
Enter second number: 5
Enter an operator (+, -, *, /): -
Result: 10 - 5 = 5
Example 2
Enter first number: 7
Enter second number: 0
Enter an operator (+, -, *, /): /
Error: Division by zero.
- Division by Zero: The program should check for division by zero and display an appropriate error message.
- Invalid Operator: If the user enters an invalid operator, the program should inform the user.
- Input Validation: You can assume that the user enters valid numbers and a valid character for the operator.
Write a C program that determines the type of a triangle based on the lengths of its three sides. The program should:
- Prompt the user to enter the lengths of three sides.
- Determine if the sides form a valid triangle.
- If valid, identify the triangle as:
- Equilateral: All sides are equal.
- Isosceles: Two sides are equal.
- Scalene: All sides are different.
Example 1
Enter the lengths of the three sides: 5 5 5
The triangle is equilateral.
Example 2
Enter the lengths of the three sides: 7 7 5
The triangle is isosceles.
Example 3
Enter the lengths of the three sides: 3 4 5
The triangle is scalene.
Example 4
Enter the lengths of the three sides: 1 2 3
The lengths do not form a valid triangle.
- Triangle Inequality Theorem: Ensure that the sum of any two sides is greater than the third side.
- Invalid Triangles: If the sides do not form a valid triangle, the program should inform the user.
- Equal Sides: Be careful when checking for equality due to floating-point precision.
Develop a C program that determines the quadrant of a point in a 2D coordinate system based on its x and y coordinates. The program should:
- Prompt the user to enter the x and y coordinates.
- Determine and display the quadrant in which the point lies:
- Quadrant I: x > 0 and y > 0
- Quadrant II: x < 0 and y > 0
- Quadrant III: x < 0 and y < 0
- Quadrant IV: x > 0 and y < 0
- If the point lies on an axis or at the origin, indicate that as well.
Example 1
Enter the x-coordinate: 4
Enter the y-coordinate: -5
The point is in Quadrant IV.
Example 2
Enter the x-coordinate: 0
Enter the y-coordinate: 0
The point is at the origin.
Example 3
Enter the x-coordinate: -3
Enter the y-coordinate: 0
The point lies on the X-axis.
Example 4
Enter the x-coordinate: 0
Enter the y-coordinate: 6
The point lies on the Y-axis.
- Axis Handling: Correctly identify points that lie exactly on the X-axis or Y-axis.
- Origin: Ensure that the point (0, 0) is identified as the origin.
Create a C program that calculates the minimum number of banknotes required to represent a given amount of money in dollars. The denominations available are:
- $20 bills
- $10 bills
- $5 bills
- $1 bills
The program should:
- Prompt the user to enter an amount in dollars (integer value).
- Calculate and display the minimum number of each type of bill needed.
Example 1
Enter an amount in dollars: 93
Minimum number of banknotes:
$20 bills: 4
$10 bills: 1
$5 bills: 0
$1 bills: 3
Example 2
Enter an amount in dollars: -5
Invalid amount. Please enter a non-negative integer.
- Negative Amounts: The program should handle negative inputs by displaying an error message.
- Zero Amount: If the amount is zero, the program should indicate that no bills are needed.
- Non-integer Values: You can assume the user will enter an integer amount.
Write a C program that calculates the distance between two points in a 2D plane. The program should:
- Prompt the user to enter the coordinates of the first point (x₁, y₁).
- Prompt the user to enter the coordinates of the second point (x₂, y₂).
- Calculate and display the distance between the two points using the distance formula:
Example 1
Enter the coordinates of the first point (x1 y1): 3 4
Enter the coordinates of the second point (x2 y2): 7 1
The distance between the two points is: 5.000
Example 2
Enter the coordinates of the first point (x1 y1): -2.5 0
Enter the coordinates of the second point (x2 y2): 0 3.5
The distance between the two points is: 4.301
- Same Points: If both points are the same, the distance should be zero.
- Negative Coordinates: The program should handle negative values correctly.
- Floating-Point Precision: Consider formatting the output to three decimal places for readability.
- Code Style: Your code should be well-indented and commented where necessary.
- Compilation: Ensure your code compiles without errors or warnings.
- Testing: Test your programs with multiple inputs to ensure correctness.
- Academic Integrity: Discussing ideas is allowed, but sharing code is not. Submissions will be checked for plagiarism.
If you have any questions regarding the homework, feel free to reach out:
- Teaching Assistant: Seyyed Mohammad Hamidi
- Telegram: t.me/rsmhamidi
- Telegram Group: t.me/AUT_BP_Fall_2024
- Github: github.com/smhamidi
Best Regards, Hamidi