以下代码片段均假设已包含<iostream>头文件，且使用标准命名空间或显式使用std::cout进行输出。
<iostream>
std::cout
int arr[] = {10, 20, 30, 40, 50}; for(int i = 0; i <= 5; ++i) { std::cout << arr[i] << " "; }
int arr[] = {10, 20, 30, 40, 50}; for(int i = 0; i < sizeof(arr)/sizeof(arr[0]); ++i) { std::cout << arr[i] << " "; }
int arr[] = {10, 20, 30, 40, 50}; for(int i = 1; i < 5; ++i) { std::cout << arr[i] << " "; }
int arr[] = {10, 20, 30, 40, 50}; for(int i = 0; i > 0; ++i) { std::cout << arr[i] << " "; }