我在编译我的程序时遇到了问题。错误发生在第 165-177 行。我添加的只是对字母存在的测试，我得到了一个错误，希望你能帮忙! 完整代码 http://pastebin.com/embed.php?i=WHrSasYk
(下面附上代码)
do
{
cout << "\nCustomer Details:";
cout << "\n\tCustomer Name:";
cout << "\n\t\tFirst Name:";
getline (cin, Cust_FName, '\n');
if (Quotation::Cust_FName.length() <= 1)
ValidCustDetails = false;
else
{
// Error line 165!
for (unsigned short i = 0; i <= Cust_FName.length; i++)
if (!isalpha(Quotation::Cust_FName.at(i)))
ValidCustDetails = false;
}
cin.ignore();
cout << "\t\tLast Name:";
getline (cin, Cust_LName, '\n');
if (Cust_LName.length () <= 1)
ValidCustDetails = false;
else
{
// Error line 177!
for (unsigned short i = 0; i <= Cust_LName.length; i++)
if (!isalpha(Cust_LName.at(i)))
ValidCustDetails = false;
}
cin.ignore();
}
while(!ValidCustDetails);
最佳答案
这些行是你的问题:
for (unsigned short i = 0; i <= Cust_FName.length; i++)
for (unsigned short i = 0; i <= Cust_LName.length; i++)
// ^^
std::string::length 是一个函数，所以你需要用括号调用它:
for (unsigned short i = 0; i <= Cust_FName.length(); i++)
for (unsigned short i = 0; i <= Cust_LName.length(); i++)
关于C++ 成员函数的无效使用(你忘记了 '()' 了吗？)，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/27712883/