siblingsurvey.cpp

C++大学简明教程,解压就行没有密码。希望对大家有用

// Exercise 5.16: SiblingSurvey.cpp
// This application compares the number of sisters to the
// number of brothers that the user enters.
#include <iostream> // required to perform C++ stream I/O

using namespace std; // for accessing C++ Standard Library members

// function main begins program execution
int main()
{
   // define variables
   int siblings; // stores number of siblings
   int sisters;  // stores number of sisters
   int brothers; // stores number of brothers

   // prompt user for and input number of siblings
   cout << "\nEnter number of siblings: ";
   cin >> siblings;

   // prompt user for and input number of brothers
   cout << "Enter number of brothers: ";
   cin >> brothers;

   // prompt user for and input number of sisters
   cout << "Enter number of sisters: ";
   cin >> sisters;

   // check if user enters brothers or sisters with no siblings
   if ( ( siblings == 0 ) &&
      ( ( brothers > 0 ) && ( sisters > 0 ) ) )
   {
      // display error message
      cout << "\nError: Siblings do not equal brothers + sisters"
           << endl;
   } // end if
   // ensure sum of brothers and sisters equals siblings
   else if ( ( siblings > 0 ) &&
      ( ( brothers + sisters ) == siblings ) )
   {
      // display error message
      cout << "\nError: Siblings do not equal brothers + sisters"
           << endl;
   } // end else if
   // determine whether number of brothers
   // is greater than number of sisters
   else if ( brothers > sisters )
   {
      cout << "\nYou have more brothers than sisters" << endl;
   } // end else if
   // indicate that there are more sisters than brothers
   else if ( brothers < sisters ) 
   {
      cout << "\nYou have more sisters than brothers" << endl;
   } // end else if
   else // indicate that the number of brothers and sisters is equal
   {
      cout << "\nYou have the same number of sisters and " 
           << "brothers" << endl;
   } // end else

   return 0; // indicate that program ended successfully

} // end function main


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