410.cpp

C++实训教程

/*
	410.CPP Output more then 1 parameter
	Statistic
*/
#include <iostream.h>
double Statistic(double a[],int num,double& rmax,double & rmin,double & rmean);
const int SIZE = 10;
main()
{
	double max,min,mean;	 
	double f[SIZE] = { 1.1, 2.2, 3.3, 4.4, 5.5,6.6, 7.7, 8.8, 9.9, 11 };
	cout <<"Sum = "  << Statistic( f ,SIZE,max,min,mean) <<endl;
	cout << "Average = " << mean<<endl;
	cout << "Max = " << max<<endl;
	cout << "Min = " << min<<endl;
	return 0 ;
}
/* 定义函数：	 ↓用数组名作为参数，也可以这样说明参数类型double * a	*/
double Statistic(double a[],int num,double& rmax,double & rmin,double & rmean)
{
	int i;
	rmax=a[0],rmin=a[0];
	double sum = 0;
	for (i=0; i<num ; i++)
	{
		sum += a[i];
		if (a[i]>rmax)rmax=a[i];
		if (a[i]<rmin)rmin=a[i];
	}
	rmean=sum/num;
	return sum;
}
/*
Sum = 60.5
Average = 6.05
Max = 11
Min = 1.1

*/