c++ - 编译错误 “String does not name a type”

Question

尽管具有“using namespace std;”，但出现错误“字符串未命名类型”；在程序中。

#ifndef SHAPE_H
#define SHAPE_H

using namespace std;

class Shape
{
    public:
        Shape();
        virtual ~Shape();
        string getShapeName();
        void setShapeName(string shapeName);
        virtual float calculateArea() = 0; //Calculates area of the shape
    protected:
        const float PI = 3.14159265;
    private:
        string m_ShapeName;

};

#endif // SHAPE_H_INCLUDED

Answer 1

您缺少<string> header :

#include <string>