Data Abstraction and Problem Solving with C++
Walls and Mirrors
by Frank M. Carrano
c01p049.cpp
Go to the documentation of this file.00001 00017 const int LOW_END = 10; 00019 const int HIGH_END = 100; 00020 const int TABLE_SIZE = HIGH_END - LOW_END + 1; 00021 typedef int TableType[TABLE_SIZE]; 00022 00024 int index(int group) 00025 { 00026 return group - LOW_END; 00027 } // end index 00028 00041 void readData(TableType incomeData) 00042 { 00043 int group, number; // input values 00044 00045 // clear array 00046 for (group = LOW_END; group <= HIGH_END; ++group) 00047 incomeData[index(group)] = 0; 00048 00049 for (cin >> group >> number; 00050 (group != 0) || (number != 0); 00051 cin >> group >> number) { 00052 // Invariant: group and number are not both 0 00053 // cout << "Income group " << group << " contains " 00054 // << number << " people.\n"; 00055 incomeData[index(group)] += number; 00056 } // end for 00057 } // end readData
