std::stringstream 如何清空
请问如何清空stringstream,看到有人说是用stringstream.clear()方法,试验过了不行
#include <sstream>
#include <stdio.h>
class CTest{
public:
void test(int a)
{
m_sstream.clear();
m_sstream<<a;
printf("stream is:%s\n",m_sstream.str().c_str());
}
private:
std::stringstream m_sstream;
}
int main()
{
CTest cTest;
cTest.test(10);
cTest.test(20);
cTest.test(30);
}
输出结果:
10
2010
302010
请问如何清空m_sstream