Код:
#include <windows.h>
class SchoolClass
{
int *ClassData;
int ClassDataIndex;
public:
SchoolClass(int NumberStudents);
~SchoolClass(void);
void AddScore(int Score);
int GetScore(int Index);
float AverageScore(void);
};
SchoolClass::SchoolClass(int NumberStudents)
{
ClassData = new int[NumberStudents];
ClassDataIndex = 0;
}
SchoolClass::~SchoolClass(void)
{
delete ClassData;
}
void SchoolClass::AddScore(int Score)
{
ClassData[ClassDataIndex++ ] = Score;
}
int SchoolClass::GetScore(int Index)
{
if(Index <= ClassDataIndex)
{
return ClassData[Index];
}
else
{
return -1;
}
}
float SchoolClass::AverageScore(void)
{
float Sum = 0;
if(ClassDataIndex == 0)
{
return -1;
}
for(int loop_index = 0;loop_index < ClassDataIndex;loop_index++)
{
Sum += (float) ClassData[loop_index];
}
return Sum / (float) ClassDataIndex;
}
void main()
{
SchoolClass HistoryClass(9);
SchoolClass EnglishClass(10);
HistoryClass.AddScore(80);
HistoryClass.AddScore(81);
HistoryClass.AddScore(82);
HistoryClass.AddScore(83);
HistoryClass.AddScore(84);
HistoryClass.AddScore(85);
HistoryClass.AddScore(86);
HistoryClass.AddScore(87);
HistoryClass.AddScore(88);
EnglishClass.AddScore(91);
EnglishClass.AddScore(92);
EnglishClass.AddScore(93);
EnglishClass.AddScore(94);
EnglishClass.AddScore(95);
EnglishClass.AddScore(96);
EnglishClass.AddScore(97);
EnglishClass.AddScore(98);
EnglishClass.AddScore(99);
EnglishClass.AddScore(100);
cout << "Average score for History class: ";
cout << HistoryClass.AverageScore() << "\n";
cout << "Average score for English class:";
cout << EnglishClass.$AverageScore() << "\n";
}