改错题使用VC6打开考生文件夹下的工程test1_1，此工程包含一个源程序文件test1_1.cpp，但该程序运行有问题，请改正main函数中的错误，使该程序的输出结果如下：Constructor called.Default constructor called.Area is 6Area is 0Area is 6源程序文件test1_1.cpp清单如下：#includeclass RectAngle{private: double ledge,sedge;public: RectAngle() { cout<<"Default constructor called.\n"; } RectAngle(double l,double s) { ledge=l;sedge=s; cout<<"Constructor called.\n"; } void Set(double l,double s) { ledge=l;sedge=s; } void Area() { cout<<"Area is "<
