简单的C++嵌套for循环程序来打印带有星号的方块错误

Question

我试图用嵌套for循环打印一个正方形，但它总是像下面的形状，而且我不知道错误在我的代码中的位置

#include<iostream> 
using namespace std; 

int main() 
{ 
    int size=0; 
    cout << " enter hte size of the square :: " << endl; 
    cin >> size; 

    for(int i = 0 ; i != size; i++) 
    { 



     for(int j=0; j != size; j++) 
     { 
      if (i == 0 || i == size-1 || j == 0 || i == size-1) cout << "* "; 
      else cout << " "; 
     } 

     cout << endl; 

} 
    return 0; 
} 

---

the output: 

* * * * * * 
* 
* 
* 
* 
* * * * * * 

---

所需的输出中：

* * * * * * 
*   * 
*   * 
*   * 
*   * 
* * * * * * 

---

Answer 1

#include<iostream> 
using namespace std; 

int main() 
{ 
    int size=0; 
    cout << " enter hte size of the square :: " << endl; 
    cin >> size; 

    for(int i = 0 ; i != size; i++) 
    { 



     for(int j=0; j != size; j++) 
     { 
      if (i == 0 || i == size-1 || j == 0 || j == size-1) cout << "* "; 
      else cout << " "; 
     } 

     cout << endl; 

} 
    return 0; 
} 

你的if语句错了！