A snake game written in the curses Library

The Snake Game written in the curses library is a beginner in C language. It may be very spam and the code is messy. If you are just learning programming, you can check it out. I hope you can give me some advice.
# Include <stdio. h>
# Include <curses. h>
# Include <stdlib. h>
# Include <time. h>

Struct Food {
Int x;
Int y;
Int exist;
};
Struct Snake {
Int x [100];
Int y [100];
Int node;
};

Struct Food food;
Struct Snake;
Int t = 300000;
Int point = 0;

// Draw the Main Window
Int win (void)
{
Int I;
For (I = 0; I <20; I ++)
{
Move (I, 0 );
Addstr ("+ ");
Move (I, 50 );
Addstr ("+ ");
}
For (I = 0; I <= 50; I ++)
{
Move (0, I );
Addstr ("+ ");
Move (20, I );
Addstr ("+ ");
}
}
// Draw the score window
Int socrewin (void)
{
Int I;
For (I = 0; I <5; I ++)
{
Move (I, 52 );
Addstr ("+ ");
Move (I, 62 );
Addstr ("+ ");
}
For (I = 52; I <= 62; I + = 1)
{
Move (0, I );
Addstr ("+ ");
Move (5, I );
Addstr ("+ ");
}
}
// Menu options
Int menu (void)
{
Int ch;
Move (3, 5 );
Addstr ("a. Star ");
Move (5, 5 );
Addstr ("q. Exit ");
Ch = getch ();
Switch (ch)
{
Case:
Return;
Case q:
Return q;

}
}
// Game Operation
Int gamerun (void)
{
Int ch, I;
I = 0;
Snake. x [0] = 10;
Snake. y [0] = 25;
Snake. node = 1;
Nodelay (stdscr, TRUE );
Food_init ();
While (I! =-1)
{
If (pd () = 1)
{
Food_init ();
}
Snake ke_win (snake. x [0], snake. y [0]);
Food_win (food. x, food. y );
If (game_win () =-1)
Break;
Ch = getch ();
If (key (ch ))! = 0)
I = key (ch );
Switch (I)
{
Case 1:
Snake. x [0] --;
Break;
Case 2:
Snake. x [0] ++;
Break;
Case 3:
Snake. y [0] --;
Break;
Case 4:
Snake. y [0] ++;
Break;
}
Coo ();

}
Move (10, 20 );
Addstr ("Game over ");
Refresh ();
Sleep (5 );
Return 0;
}
// Food Initialization
Int food_init (void)
{
Srand (int) time (0 ));
Food. x = rand () % 20;
If (food. x = 0)
Food. x = 1;
Food. y = rand () % 50;
If (food. y = 0)
Food. y = 1;
Food_win (food. x, food. y );
}
// Draw game graphics
Int game_win (void)
{
Int I;
If (snake. x [0] = 0 | snake. x [0] = 20 | snake. y [0] = 0 | snake. y [0] = 50)
Return-1;
For (I = 0; I <= snake. node; I ++)
{
Move (snake. x [I], snake. y [I]);
Addstr ("O ");
}
Move (LINES-1, 0 );
Return 0;
}

// Keyboard signal capture
Int key (ch)
{
If (ch = KEY_UP)
Return 1;
If (ch = KEY_DOWN)
Return 2;
If (ch = KEY_LEFT)
Return 3;
If (ch = KEY_RIGHT)
Return 4;
If (ch = q)
Return-1;
Return 0;
}
// Judge
Int pd (void)
{
If (food. x = snake. x [0])
{
If (food. y = snake. y [0])
{
Snake. node ++;
Point ++;
Return 1;
}
}
Return 0;
}
// Score
Int Score ()
{
Move (2, 55 );
Addstr ("Score ");
Move (3, 57 );
Printw ("% d", point );
}
// Graphic drawing of food
Int food_win (int x, int y)
{
Move (x, y );
Addstr ("$ ");
Return 0;
}
// Refresh the screen
Int coo (void)
{
Clear ();
Win ();
Socrewin ();
Score ();
Usleep (t );
Refresh ();
Return 0;
}