📊 Working with Arrays

Arrays allow you to store multiple values in a single variable. Learn how to declare, manipulate, and work with arrays in iPseudo.

🎯 Array Declaration

Declare an array by specifying its size in square brackets:

pseudocode

Algorithm ArrayDeclaration

# Declare array with 5 elements
Var numbers[5]

# Arrays use 0-based indexing
# Valid indices: 0, 1, 2, 3, 4

Endalgorithm

✏️ Array Assignment

Assign values to specific array elements:

Algorithm ArrayAssignment

Var items[3]

# Assign values
items[0] = 10
items[1] = 20
items[2] = 30

# Using Input
items[1] = Input "Enter value:"

Print items[0]

Endalgorithm

Bounds Checking: iPseudo automatically checks array bounds. Accessing an invalid index will throw an error!

📏 Size() Function

Get the size of an array using the Size() function:

Algorithm ArraySize

Var data[10]

Var length = Size(data)
Print "Array size:", length  # Output: 10

# Use in loops
For i = 0 To Size(data) - 1
    Print "Index:", i
Endfor

Endalgorithm

🔄 Looping Through Arrays

Algorithm ArrayLoop

Var scores[5]

# Fill array with values
For i = 0 To 4
    scores[i] = (i + 1) * 10
Endfor

# Display all elements
For i = 0 To Size(scores) - 1
    Print "Score", i + 1, ":", scores[i]
Endfor

Endalgorithm

💡 Complete Example

pseudocode

Algorithm StudentGrades

# Declare array for 5 students
Var grades[5]
Var total = 0

# Input grades
For i = 0 To Size(grades) - 1
    grades[i] = Input "Enter grade for student " + (i + 1)
    total = total + grades[i]
Endfor

# Calculate average
Var average = total / Size(grades)

# Display results
Print "All Grades:"
For i = 0 To Size(grades) - 1
    Print "Student", i + 1, ":", grades[i]
Endfor

Print "Average:", average

Endalgorithm