/* C++ style demonstration program * by R. P. Futrelle, ID 123456789 * COM1100 Fall 2000 * College of Computer Science * Northeastern University * * Version 1.0, 10/11/2000 * File: rpfexamp.cpp */ /* Creates HTML code, written to cout. * Demonstrates C++ programming practices, layout. * Contains: * Function declarations (prototypes) * Functions with arguments and return values * Functions calling other functions * Functions embedded in output sequences * Output string escape sequences */ /* Note the use of indentation, blank lines and * other white space, as well as grouping related * lines together. Not only is there white space in * the source code, but white space (extra newlines) * are added to the HTML output to make it more readable. * * Comments do not repeat the obvious content of statements. * Instead, the explain their role, their importance * and what they do. */ // start of the program proper: #include <iostream> #include <string> // something extra using namespace std; // Function prototypes, not commented here but in definitions below. // HTML functions: void startHTML(); void endHTML(); void titleIt(string); void me(); void bigAndSmall(int); // Numerical functions: float bigNumber(int); float smallNumber(int); // The main() generates the HTML code, meant for a browser. int main() { int intParameter = 33, pause; string myTitle = "C++ style demo program, V1.0, October 2000."; startHTML(); titleIt(myTitle); me(); bigAndSmall(intParameter); endHTML(); cin >> pause; // pauses waiting for input (in Debug mode) return 0; } /* Function defintions */ // The obligatory tags that begin an HTML document // Note the use of newlines '\n' instead of the more // cumbersome << endl. void startHTML() { cout << "<html>\n <body> \n\n"; } // The closing tags, balancing the ones in startHTML() void endHTML() { cout << " </body>\n</html> \n"; } // Places a large title at the top of the web page void titleIt(string s) { cout << "<h2>" << s << "</h2> \n\n"; } // Prints the authors name, in an HTML paragraph. void me() { cout << "<p>by R. P. Futrelle</p> \n\n"; } // This puts out the line with the two values in it. void bigAndSmall(int n) { cout << "The big number: " << bigNumber(n) << " and the small one: " << smallNumber(n) << "\n\n"; } // The two functions to compute "big" and "small" numbers float bigNumber(int n) { return n * 3846457.44; } float smallNumber(int n) { return n * 0.0000341; } //************************************************************ // Here is the HTML produced by running the code above: /* <html> <body> <h2>C++ style demo program, V1.0, October 2000.</h2> <p>by R. P. Futrelle</p> The big number: 1.26933e+008 and the small one: 0.0011253 </body> </html> */
Here is the final HTML as displayed:
by R. P. Futrelle
The big number: 1.26933e+008 and the small one: 0.0011253