No operator "==" matches these operands

for (b2Body* it = world.GetBodyList(); it !=0; it = it->GetNext())
        {
            if (it->GetUserData() == (void *)("dynamic"))
            {
                b2Vec2 pos = it->GetPosition();
                float angle = it->GetAngle();
                dynamic_body.setPosition(pos.x/SCALE,pos.y/SCALE);
                dynamic_body.setRotation(angle*DEG);
                window.draw(dynamic_body);
            }
        }

if( strcmp(it->GetUserData() ,"dynamic")==0 )

#include <iostream>
#include <SFML/Graphics.hpp>
#include "box2d/box2d.h"
using namespace sf;
b2Vec2 gravity(0.f, 9.8f);
b2World world(gravity);
float scale(float x)
{
    return x / 30.f;
}
float deg(float x)
{
    return x / 57.29577f;
}
float rScale(float x)
{
    return x * 30.f;
}
float rdeg(float x)
{
    return x * 57.29577f;
}
 
void setGround(int x, int y, int w, int h)//ширина,высота.центр в точке xy 
{
    b2PolygonShape b2ground;
    b2ground.SetAsBox(scale(w), scale(h));
    b2BodyDef bdef;
    bdef.position.Set(scale(x), scale(y));
    b2Body* b_ground = world.CreateBody(&bdef);
    b_ground->CreateFixture(&b2ground, 1);
}
 
int main()
{
    RenderWindow window(VideoMode(1600, 540), "SFML works!");
    window.setFramerateLimit(70);
 
    Image image1, image2, image3;
    image1.loadFromFile("images\\use\\Hero\\Run.png");
    image1.createMaskFromColor(Color(255, 255, 255));
    image2.loadFromFile("Images\\Use\\Terrain\\box.png");
    image2.createMaskFromColor(Color(255, 255, 255));
    image3.loadFromFile("Images\\Use\\Terrain\\wall.png");
 
    Texture t1, t2, t3;
    t1.loadFromImage(image1);
    t2.loadFromImage(image2);
    t3.loadFromImage(image3);
    t3.setRepeated(true);
    t1.setSmooth(true);
 
    Sprite sPlayer(t1), sBox(t2), sGround(t3);
 
    sPlayer.setTextureRect(IntRect(0, 0, 37, 29));
    sBox.setTextureRect(IntRect(0, 0, 21, 16));
 
    sGround.setTextureRect(IntRect(0, 0, 75 * 25, 96));
    sGround.setPosition(0, 500);
 
    // BOX2D
    //Ground
    setGround((75 * 25) / 2, (500 + 96) / 2, 75 * 25, 96);
    //Player
    b2PolygonShape shape;
    shape.SetAsBox(scale(37/2), scale(29/2));
 
    b2BodyDef bdef;
    bdef.type = b2_dynamicBody;
    bdef.position.Set(scale(600), scale(100));
    b2Body *boxBody = world.CreateBody(&bdef);
    boxBody->CreateFixture(&shape, 2);
    boxBody->SetUserData((void*)("dynamic"));
    while (window.isOpen())
    {
        Event event;
        while (window.pollEvent(event))
        {
            if (event.type == Event::Closed)
                window.close();
        }
        world.Step(1 / 60.f, 8, 3);
        window.clear(Color(107, 140, 255));
        window.draw(sGround);
        for (b2Body* it = world.GetBodyList(); it != 0; it = it->GetNext())
        {
            if (strcmp(it->GetUserData(), "dynamic") == 0)                   //Ошибка
 
 
            {
                b2Vec2 pos = it->GetPosition();
                float angle = it->GetAngle();
                sBox.setPosition(rScale(pos.x), rScale(pos.y));
                sBox.setRotation(rdeg(angle));
                window.draw(sBox);
            }
        }
        window.display();
    }
    return 0;
}

 if (strcmp((char*)(it->GetUserData()), "dynamic") == 0)

 struct B2_API b2BodyUserData
 {
     b2BodyUserData()
     {
         pointer = 0;
     }
  
     uintptr_t pointer;
 };

inline b2BodyUserData& b2Body::GetUserData()
{
    return m_userData;
}

b2BodyUserData m_userData;

struct B2_API b2BodyUserData
{
    b2BodyUserData()
    {
        pointer = 0;
    }
 
    /// For legacy compatibility
    uintptr_t pointer;
};

if (strcmp((const char*)(it->GetUserData()->pointer), "dynamic") == 0)

if (strcmp((const char*)(it->GetUserData().pointer), "dynamic") == 0)