"Thinkinginc++" 70, defensive programming

Chapter II defensive programming game of guessing words

/*** book: "thinkinginc++" * function: Realize a guessing game * time: October 8, 2014 21:54:44* Author: cutter_point*/#include <cstdlib> #include < Iostream> #include <string>using namespace Std;int main () {cout<< "Figure it out for yourself, between 1 and 100, let me guess your mind" <    <endl << "I'm going to keep guessing, know what I guess, but you always tell me if it's high or low" <<endl;    int low=1, high=100;    BOOL Guessed=false; while (!guessed)//As long as not guessed, then guessed is false, then continue to execute {//If the user plays the yin if (Low > High) {cout& lt;< "Fuck you!            Can not play a good game, not pure in this number "<<endl;        return exit_failure; } int guess= (Low+high)/2; Get the median value cout<< "I guess this number is:" <<guess<< ".        "; cout<< "Tell me if it's higher (high) or low, or am I guessing?"        (Equal) "<<endl;        string response;        cin>>response;            Switch (ToUpper (response[0)) {case ' H ': high=guess-1;        Break            Case ' L ': low=guess+1;        Break       Case ' E ': guessed=true;     Break default:cout<< "Pro, you entered the wrong data!            "<<endl;        Continue }} cout<< "YES I got it!!!"    <<endl;        return exit_success; Returns a macro inside a cstdlib that indicates that the execution of the program failed}

Automatic Date1.h

/*** book: "thinkinginc++" * Function: Construction of Time class * Time: October 8, 2014 21:55:09* Author: cutter_point*/#ifndef date1_h_included#define Date1_h_        Included#include <string>class date{public:struct Duration//A handle structure representing the time {int years;        int months;        int days;    constructor Duration (int y, int m, int D): Years (y), months (m), days (d) {}}*dt;    Date ();    Date (int year, Int. month, int day) {Dt=new Duration (year, month, day);}    Date (const std::string&);    int GetYear () const {return dt->years;}    int GetMonth () const {return dt->months;}    int GetDay () const {return dt->days;}    std::string toString () const;    friend bool operator< (const date&, const date&);    friend bool Operator> (const date&, const date&);    friend bool operator<= (const date&, const date&);    friend bool operator>= (const date&, const date&);    friend bool operator== (const date&, const date&); friend bool Operator!= (const DATE&, const date&); Friend Duration Duration (const date&, const date&);}; #endif//date1_h_included

Test procedure 1SimpleDateTest.cpp

/*** book: "thinkinginc++" * Function: Test time class * Time: October 8, 2014 21:55:33* Author: cutter_point*/#include <iostream> #include " Date1.h "using namespace Std;int npass=0, nfail=0;void test (bool t) {if (t) npass++; else nfail++;}  The function used to test int main () {    Date mybday (1951, 1);    Test (mybday.getyear () = = 1951);    Test (mybday.getmonth () = = ten);    Test (mybday.getday () = = 1);    cout<< "Passed:" <<nPass<< ", Failed:" <<nFail<<endl;    return 0;}

"Thinkinginc++" 70, defensive programming