cppbeginner10 minutes

Refactor Messy C++ Function to Improve Readability and Efficiency

Given a function with redundant variables and unclear naming, refactor it to improve code quality without changing its behavior.

Challenge prompt

You are given a C++ function that calculates the sum of all integers from 1 to n but contains unnecessary variables and verbose logic. Refactor this function to make the code cleaner, more readable, and efficient, while maintaining the same functionality.

Guidance

• Remove any redundant variables that do not contribute to the logic.
• Rename variables to have more meaningful and concise names.
• Simplify the loop or logic if possible, keeping the result unchanged.

Hints

• Consider if all declared variables are necessary.
• Think about meaningful variable names that explain their role clearly.
• Check if the loop or summing logic can be expressed more cleanly.

Starter code

int calculateSum(int n) {
    int totalSum = 0;
    int temp = 0;
    for(int i = 1; i <= n; i++) {
        temp = i;
        totalSum = totalSum + temp;
    }
    return totalSum;
}

Expected output

For input n=5, the function should return 15 (1+2+3+4+5).

Core concepts

variablesloopsfunctionscode readability

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