C++基本功能程序不会编译出现错误的屏幕

Question

当我尝试用g ++进行编译时，该程序给了我一个错误的全屏幕，但我甚至没有启动硬件部分。只是印刷说明。这里有什么问题？

/* Samuel LaManna 
CSC 135 Lisa Frye 
Program 2 Functions (Shipping Charges) 
Calculate the shipping and total charge 
for shipping spools of wire 
*/ 

#include <iostream> 

using namespace std; 

void instruct();  //Function Declaration for instruction function 

int main() 
{ 
    instruct();  // Function to print instructions to user 

    return 0; 
} 


/********************************************/ 
// Name: Instruct       /
// Description: Print instructions to user /
// Parameters: N/A       /
// Reture Value: N/A      /
/********************************************/ 

void instruct() 
{ 
    cout << "This program will calculate the shipping information " 
     << "for a batch of wire spools. " << endl < endl; 

    return; 
} 

Answer 1

这里有一个问题：

<< endl < endl; 

它应该是：

<< endl << endl;