求大神纠错 C++#include using namespace std;class rectangle{public:rectangle(){cout

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求大神纠错C++#includeusingnamespacestd;classrectangle{public:rectangle(){cout求大神纠错C++#includeusingnamespa

求大神纠错 C++#include using namespace std;class rectangle{public:rectangle(){cout
求大神纠错 C++
#include
using namespace std;
class rectangle
{
public:
rectangle(){cout

求大神纠错 C++#include using namespace std;class rectangle{public:rectangle(){cout
#include
using namespace std;
class rectangle
{
public:
rectangle(){cout