does any one can help me to fix this program, please tell me how do you run the program and show me the output.

this is an error saying: SFML/Graphics.hpp: No such file or directory compilation terminated.

#include

#include

using namespace sf;

int main()

{

RenderWindow app(VideoMode(256,256), "15-Puzzle!");

app.setFramerateLimit(60);

Texture t;

t.loadFromFile("images/15.png");

int w = 64;

int grid[6][6] = {0};

Sprite sprite[20];

int n=0;

for (int i=0;i<4;i++)

for (int j=0;j<4;j++)

{

n++;

sprite[n].setTexture(t);

sprite[n].setTextureRect( IntRect(i*w,j*w,w,w) );

grid[i+1][j+1]=n;

}

while (app.isOpen())

{

Event e;

while (app.pollEvent(e))

{

if (e.type == Event::Closed)

app.close();

if (e.type == Event::MouseButtonPressed)

if (e.key.code == Mouse::Left)

{

Vector2i pos = Mouse::getPosition(app);

int x = pos.x/w + 1;

int y = pos.y/w + 1;

int dx=0;

int dy=0;

if (grid[x+1][y]==16) {dx=1; dy=0;};

if (grid[x][y+1]==16) {dx=0; dy=1;};

if (grid[x][y-1]==16) {dx=0; dy=-1;};

if (grid[x-1][y]==16) {dx=-1;dy=0;};

int n = grid[x][y];

grid[x][y] = 16;

grid[x+dx][y+dy] = n;

//animation

sprite[16].move(-dx*w,-dy*w);

float speed=3;

for (int i=0;i

{sprite[n].move(speed*dx,speed*dy);

app.draw(sprite[16]);

app.draw(sprite[n]);

app.display(); }

}

}

app.clear(Color::White);

for (int i=0;i<4;i++)

for (int j=0;j<4;j++)

{

int n = grid[i+1][j+1];

sprite[n].setPosition(i*w,j*w);

app.draw(sprite[n]);

}

app.display();

}

return 0;

}