Operators

Problem:

Create a simple calculator that performs all four basic arithmetic operations (addition, subtraction, multiplication, division) on two numbers.

Requirements:

• Get two numbers from the user
• Calculate and display all four operations
• Use proper arithmetic operators (+, -, *, /)

Example Output:

Algorithm BasicCalculator
    var num1 = Input "Enter first number:"
    var num2 = Input "Enter second number:"
    
    # Perform all four operations
    var sum = num1 + num2
    var difference = num1 - num2
    var product = num1 * num2
    var quotient = num1 / num2
    
    Print num1, "+", num2, "=", sum
    Print num1, "-", num2, "=", difference
    Print num1, "×", num2, "=", product
    Print num1, "÷", num2, "=", quotient
Endalgorithm

Problem:

Use the modulo operator (mod) to determine if a number is even or odd.

Example Output:

Algorithm EvenOddChecker
    var number = Input "Enter a number:"
    var remainder = number mod 2
    
    Print number, "mod 2 =", remainder
    
    If remainder == 0 Then
        Print "The number is even"
    Else
        Print "The number is odd"
    Endif
Endalgorithm

Problem:

Compare two numbers using all comparison operators (==, !=, <, >, <=, >=).

Algorithm ComparisonDemo
    var a = Input "Enter first number:"
    var b = Input "Enter second number:"
    
    Print a, "== ", b, ":", (a == b)
    Print a, "!= ", b, ":", (a != b)
    Print a, "< ", b, ":", (a < b)
    Print a, "> ", b, ":", (a > b)
    Print a, "<= ", b, ":", (a <= b)
    Print a, ">= ", b, ":", (a >= b)
Endalgorithm

Problem:

Check if a student passes based on attendance AND grade using logical operators.

Algorithm PassChecker
    var attendance = Input "Enter attendance %:"
    var grade = Input "Enter grade:"
    
    var goodAttendance = attendance >= 75
    var passingGrade = grade >= 60
    
    Print "Attendance >= 75:", goodAttendance
    Print "Grade >= 60:", passingGrade
    Print "Passes course (AND):", (goodAttendance AND passingGrade)
Endalgorithm

Problem:

Calculate what percentage one number is of another.

Algorithm PercentageCalculator
    var part = Input "Enter part:"
    var whole = Input "Enter whole:"
    
    var percentage = (part / whole) * 100
    
    Print part, "is", percentage, "% of", whole
Endalgorithm

Problem:

Calculate final price after applying a discount percentage.

Algorithm DiscountCalculator
    var price = Input "Enter original price:"
    var discountPercent = Input "Enter discount %:"
    
    var discountAmount = price * (discountPercent / 100)
    var finalPrice = price - discountAmount
    
    Print "Discount amount:", discountAmount
    Print "Final price:", finalPrice
Endalgorithm

Problem:

Calculate a number raised to a power (e.g., 2^3 = 2 × 2 × 2 = 8).

Algorithm PowerCalculator
    var base = Input "Enter base:"
    var exponent = Input "Enter exponent:"
    
    var result = base * base * base  # For exponent=3
    
    Print base, "^", exponent, "=", result
Endalgorithm

Problem:

Calculate the average of three numbers.

Algorithm AverageCalculator
    var num1 = Input "Enter number 1:"
    var num2 = Input "Enter number 2:"
    var num3 = Input "Enter number 3:"
    
    var average = (num1 + num2 + num3) / 3
    
    Print "Average:", average
Endalgorithm

Problem:

Swap the values of two variables using a temporary variable.

Algorithm SwapValues
    var a = Input "Enter first value:"
    var b = Input "Enter second value:"
    
    Print "Before swap: a=", a, ", b=", b
    
    # Swap using temporary variable
    var temp = a
    a = b
    b = temp
    
    Print "After swap: a=", a, ", b=", b
Endalgorithm

Problem:

Evaluate a complex mathematical expression: result = (a + b) * c - d / e

Algorithm ComplexExpression
    var a = Input "Enter a:"
    var b = Input "Enter b:"
    var c = Input "Enter c:"
    var d = Input "Enter d:"
    var e = Input "Enter e:"
    
    var result = (a + b) * c - d / e
    
    Print "(", a, "+", b, ") *", c, "-", d, "/", e, "=", result
Endalgorithm