ptrtrain

gistfile1.txt

#include <iostream>
const int MAX=5;
using namespace std;
void convert(double* ptr){
	for(int i=0;i<MAX;i++)
	*ptr++ *=2.5;
}
int main(){
	double sum=0;
	double arr[MAX]={10,20,30,50,100};
	
	
	convert(arr);
	
	for(int i=0;i<MAX;i++){
	sum+=arr[i];
	cout<<i+1<<" "<<arr[i]<<endl;
	}
	double avg=0;
	avg=sum/MAX;
	cout<<"total is "<<sum<<endl;
	cout<<"average is "<<avg<<endl;
	cout<<"number 1 is "<<arr[0]<<endl;
}