连微软给出的例子c2552.cpp在vc6.0下都无法通过!各位大哥请教了!
// C2552.cpp
// compile with: /clr
#include <string>
using namespace std;
struct Pair_Incorrect {
private:
string m_name;
double m_val;
};
struct Pair_Correct1 {
public:
Pair_Correct1(string name, double val)
: m_name(name), m_val(val) {}
private:
string m_name;
double m_val;
};
struct Pair_Correct2 {
public:
string m_name;
double m_val;
};
int main() {
// To fix, add a constructor to this class and use it for
// initializing the data members, see Pair_Correct1 (below)
// or
// Do not have any private or protected non-static data members,
// see Pair_Correct2 (below). Pair_Correct2 is not recommended in
// case your object model requires some non-static data members to
// be private or protected
string name("John");
Pair_Incorrect pair1 = { name, 0.0 }; // C2552
// initialize a CLR immutable value type that has a constructor
System::DateTime dt = {2001, 4, 12, 22, 16, 49, 844}; // C2552
Pair_Correct1 pair2( name, 0.0 );
Pair_Correct1 pair3 = Pair_Correct1( name, 0.0 );
Pair_Correct2 pair4 = { name, 0.0 };
System::DateTime dt2(2001, 4, 12, 22, 16, 49, 844);
}
我关心主要问题是 Pair_Correct2 pair4 = { name, 0.0 };出现c2552错误.既精简为下面程序还是出错:
// C2552.cpp
// compile with: /clr
#include <string>
using namespace std;
struct Pair_Correct2 {
public:
string m_name;
double m_val;
};
int main() {
string name("John");
Pair_Correct2 pair4 = { name, 0.0 };
}