Coding Rules

1. Always include your name and assignment information as comments.

     // Allan Kochis
     // Assignment 1.
     // Page 745 # 23
   

   
   
2. set the line width to 78 and break long lines before an operator.

       // long line
       cout << "C++ Coding rules" << endl << "Failure to follow these rules" << endl << " will result in loss of grade points " endl;
       // preferred style
       cout << "C++ Coding rules" << endl
    << "Failure to follow these rules" << endl
           << " will result in loss of grade points " endl;
   

   
   
3. Use meaningful names. One character names are unacceptable. use camel back for longer names. Use of Hungarian notoation is optional.

       // unacceptable
       p=o*(1-d);
       // Better
       Price=originalPrice * ( 1 - salesDiscount );
       // Hungarian
       fPrice=fOriginalPrice * ( 1 - fSalesDiscount);
   

   
   
4. Use whitespace on binary operators to make them stand out.

       // Compacted
       Price=originalPrice*(1-salesDiscount);
       // Readable
       Price=originalPrice * (1 - salesDiscount);
   

5. Parenthesize in either K&R or Classic style.
   
   K&R style.

       while(count < 10) {
           cout << count << endl;
           count++;
       }
   

   
   Classic style

       while(count < 10)
       {
           cout << count << endl;
           count++;
       }
   

   
   
6. Don't mix your parentheses style.
   Use either K&R or classic style not both.
   Except for functions. Always use classic for the function body

       int Area(int iLength, int iWidth)
       {
           // Compute the  area of  a rectangle
           // Input lenght and width
           // Returns area
           int iArea;
           iArea=iLength*iWidth;
           return iArea;
       }
   

   
   
7. Use indents of four spaces, do not use tabs.
   Indent each subordinate block of code.

       if(iYear%4 == 0) {
    if(iYear%100 != 0) {
               bLeap=true;
           }
           else {
               if(iYear%400 == 0) {
                   bLeap=true;
               }
               else {
                   bLeap=false;
               }
           }
       }
       else {
           bLeap=false;
       }
   

   
   
8. Don't cuddle else statements. else statement should line up with the associated if statement
   

       // cuddled esle
       if(iCount > 100 ) {
          bBonus=true;
       } else {
          bBonus=false;
       }
       // uncuddled else
       if(iCount > 100 ) {
          bBonus=true;
       }
       else {
          bBonus=false;
       }
   

   
   
9. Never place two statements on a line.

        iCount=1; bControl=true;
   
        iCount=1;
        bControl=true;
   

   
   
10. The C++ compiler will accept almost any style of code. While the following ugly code is valid syntax, it will compile and run, do not use this style. Please strive to make your code human readable.

    #include <iostream>
    using namespace std;int main(){float E;int C=0;E=1.0;cout
    <<"Computing machine Eilon "<<endl;while(1.0+E>1.0){C++;E/=2;}E*=2;cout<<
    "It took "<<C<<" iterations to compute Epsilon = "<<E<<endl;system("pause");return 0;}