Code Maintenance & Programming Rules

 This guide outlines essential best practices spanning code style, architectural design, debugging, testing, performance, and portability—all aimed at reducing the long-term cognitive load of code maintenance. 🎨 1. Style Code is written for humans to read, and only incidentally for computers to execute. Variable Naming : Use descriptive names for global variables, and short names for local variables. Precision and Consistency : Use active names for functions (e.g., calculateTotal ). Above all, keep your coding style consistent throughout the project. Structure & Expressions : Use a consistent indentation and brace ( {} ) style to show program structure visually. Use the natural form for expressions. Use parentheses to make the semantics unambiguous. Break up overly complex expressions to keep them clear. Side Effects & Macros : Beware of functions with side effects. Avoid function-like macros; if unavoidable, parenthesize the macro body and arguments carefully. Magic Numbe...

高中生程式解題系統:數字翻轉


題目連結 http://zerojudge.tw/ShowProblem?problemid=a038
這題常見的解法會類似如下:


也可以用字串來解:



程式碼:
#include <iostream>
#include <sstream>

using namespace std;

int main()
{
    string s;
    while(cin >> s)
    {
        short len = s.length();
        bool hasZero = true;

        for(short i = len - 1; i >= 0; i--)
        {
            if( s[i] != '0' )
            {
                hasZero = false;
            }

            if( !hasZero )
                cout << s[i];
        }

        cout << endl;

    }

    return 0;
}
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