c++ - Adding a do/while loop -


i need add do/while loop code using != n || != n. trouble absolutely horrid do/while loops , not quite sure should place everything. before switch itself? or before entire input module?

//compiler directives  #include<iostream> #include<cstdlib>  using namespace std;  //constant declarations  const int lowerbound = 400; const int upperbound = 2400;  //main body  int main(){     //local identifiers      int year, leapcode;      //input module       cout<<"please enter year in range 400 2400\t";     cin>>year;      //process module      if ((year >= lowerbound)&& (year <= upperbound)){         if (year%4!=0)            leapcode = 1;         else            if (year%100!=0)               leapcode = 2;         else           if (year%400!=0)               leapcode = 3;         else               leapcode = 4;         switch(leapcode){               case 1:                 cout<<"the year "<<year<<" not leap year\n";                 break;              case 2:                 cout<<"the year "<<year<<" leap year\n";                 break;              case 3:                 cout<<"the year "<<year<<" century year not leap year\n";                 break;              case 4:                 cout<<"the year "<<year<<" leap century year";                 break;           } //end switch     }     else     cout<<"the year out of range\n";     system("pause");     return 0; }

do/while loops used whenever need loop code block 0 n number of times, meaning need run given code block @ least once until exit condition gets satisfied.

in case you'd have place do/while loop before leap , year variables declaration , close right after system("pause") line, of main() method. once have determine result of processing within switch block, update "another" variable (or whatever other variable you'd use in do/while condition).

by doing program go do/while loop first time , print output string, processing user input, once reaches end of loop, evaluate loop condition inside while clause determine if code block should executed again, if so, program ask input user , process it.

//compiler directives  #include < iostream > #include < cstdlib >  using namespace std;  //constant declarations  const int lowerbound = 400; const int upperbound = 2400;  //main body  int main() {     //local identifiers      {         int year, leapcode;         //declare "another" variable          //input module          cout << "please enter year in range 400 2400\t";         cin >> year;          //process module         if ((year >= lowerbound) && (year <= upperbound)) {             if (year % 4 != 0)                 leapcode = 1;             else                 if (year % 100 != 0)                     leapcode = 2;                 else                     if (year % 400 != 0)                         leapcode = 3;                     else                         leapcode = 4;             switch (leapcode) {                 case 1:                     cout << "the year " << year << " not leap year\n";                     //update "another" variable                     break;                 case 2:                     cout << "the year " << year << " leap year\n";                     //update "another" variable                     break;                 case 3:                     cout << "the year " << year << " century year not leap year\n";                     //update "another" variable                     break;                 case 4:                     cout << "the year " << year << " leap century year";                     //update "another" variable                     break;             } //end switch         }         else             cout << "the year out of range\n";             //update "another" variable          system("pause");     } while (another != "n" || != "n");      return 0; }

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