[英]C++ ostream referencing
Why does line 4 in the following print a memory address instead of the original string printed by line 2, and how do I correct this? 为什么下面的第4行打印一个内存地址,而不是第2行打印的原始字符串,我该如何纠正呢? Many thanks.
非常感谢。
std::stringstream os (std::stringstream::in | std::stringstream::out);
std::cout << result->studentId;
os << result->studentId;
std::cout << &os << std::endl;
Use the str()
function to get the underlying string: 使用
str()
函数获取基础字符串:
std::cout << os.str() << std::endl;
For future reference here's a reference on std::stringstream
, which contains every member function. 为了将来参考,这里是
std::stringstream
的参考 ,其中包含每个成员函数。
删除&
运算符
std::cout << os.str() << std::endl;
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