小测验-指针函数

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#include <iostream>
using namespace std;

// 函数声明
double getAverage(int *arr, int size);

int main (){
    int balance[5] = {18, 2, 3, 17, 50};
    double avg;
    avg = getAverage( balance, 5 ) ;
    cout << "Average value is: " << avg << endl; 
    return 0;
}

double getAverage(int *arr, int size){
     int i; 
     double avg,sum=0; 
     for (i = 0; i < size; ++i){
     sum += arr[i];
}
     avg = sum/size;
     return avg;
}