How is the Maintainability Index (MI) calculated?

The Maintainability Index combines Halstead Volume (V), Cyclomatic Complexity (M), and Lines of Code (LOC) on a scale from 0 to 100. Higher scores (>80) reflect clean, modular, and easily extensible code.

How does the COCOMO Software Cost Model work?

COCOMO (Constructive Cost Model) calculates required Person-Months (PM) and development duration based on Source Lines of Code (KLOC) and development complexity, projecting estimated team sizes and overall engineering budgets.

Code Metrics & Software Project Estimator

Code Complexity & Project Estimator

Inspect source lines of code (SLOC), McCabe Cyclomatic Complexity, Maintainability Index, Halstead Volume, and COCOMO development budget estimates.

Source Code Complexity & Estimation Engine

Analyze Cyclomatic Complexity (M), Maintainability Index (MI), and COCOMO project cost.

Paste Code or Script Snippet1347 bytes

// Authentic E-Commerce Cart & Discount Processor
function processCartCheckout(user, cartItems, discountCode, taxRate) {
  let subtotal = 0;
  let appliedDiscount = 0;

if (!user || !user.id) {
    throw new Error("Invalid authenticated customer session.");
  }

if (!cartItems || cartItems.length === 0) {
    return { success: false, message: "Cart is empty", total: 0 };
  }

for (let i = 0; i < cartItems.length; i++) {
    const item = cartItems[i];
    if (item.price > 0 && item.quantity > 0) {
      if (item.isSpecialDeal) {
        subtotal += item.price * item.quantity * 0.9;
      } else {
        subtotal += item.price * item.quantity;
      }
    }
  }

// Validate discount coupons
  if (discountCode) {
    switch (discountCode.toUpperCase()) {
      case "SUMMER20":
        appliedDiscount = subtotal * 0.20;
        break;
      case "FLAT50":
        appliedDiscount = Math.min(50, subtotal * 0.5);
        break;
      default:
        appliedDiscount = 0;
    }
  }

const taxableAmount = Math.max(0, subtotal - appliedDiscount);
  const tax = taxableAmount * (taxRate > 0 ? taxRate : 0.05);
  const grandTotal = taxableAmount + tax;

return {
    subtotal: subtotal.toFixed(2),
    discount: appliedDiscount.toFixed(2),
    tax: tax.toFixed(2),
    grandTotal: grandTotal.toFixed(2),
    currency: "INR"
  };
}

Total Lines

Code (SLOC)

Comments

Blank Lines

McCabe Cyclomatic Complexity

M = 14

Moderate

Moderate (Moderately Complex)

Maintainability Index (MI)

40 / 100

Rating: Low (Technical Debt & Fragile)

Halstead Volume

1827 bits

Difficulty (D)

21.53

Est. Dev Time

36.4 mins

COCOMO Software Effort & Budget Model

Developer Monthly Cost (Rate):₹150,000 / mo

Effort (PM)

0.10 Months

Dev Duration

1.06 Mo

Estimated Cost

₹15,496

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Zero server latency, 100% private in-browser computation, and verified financial & mathematical formulas.

Cyclomatic & Halstead Metrics

Instantly scans branching decision points, operators, operands, program volume, and difficulty.

SLOC & Line Distribution

Breaks down pure source code lines (SLOC), comments, blank lines, and comment density percentage.

COCOMO Project Budget Estimator

Estimates required person-months, delivery timeline, team sizing, and total development cost.

AEO & Search Answers

Code Metrics & Complexity FAQs

Everything about Cyclomatic complexity, maintainability scores, and software project cost estimation.

Cyclomatic complexity measures the number of linearly independent execution paths through code. Scores from 1–10 indicate simple, easily testable functions, while scores above 15–20 signal high risk that require extensive unit tests or architectural refactoring.

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