GetElem()

#include<iostream>using namespace std;len= Length sizeof(L)/sizeof(int)int L[] = { 1, 2, 3, 4, 6, 6, 7, 8, 9 };int GetElem(int L[], int i, int &e){    if (len == 0 || i<1 || i>len);        e=L[i-1];    return 1;}int main(){    int e=0;    GetElem(L,5,e);    cout << e << endl;    return 0;}//线性表返回特定值