deplacement personnage en C

#include <stdio.h>
#include <stdlib.h>
#include <SDL2/SDL.h>
#include <SDL2/SDL_image.h>

SDL_bool Collision(SDL_Rect rect1, SDL_Rect rect2);
int deplacer(SDL_Renderer *rendu);
int main(int argc, char *argv[])
{

    SDL_Window *window = NULL;
    SDL_Renderer *rendu = NULL;
    SDL_Texture *texture1 = NULL;
    SDL_Texture *texture2 = NULL;
    SDL_Surface *surface1 = NULL;
    SDL_Surface *surface2 = NULL;
    surface1 = IMG_Load("mario_droite.gif");


    SDL_Event event;
    SDL_bool run = SDL_TRUE;


    SDL_Init(SDL_INIT_VIDEO);

    window = SDL_CreateWindow("My jeu", 400, 200, 600, 400, SDL_WINDOW_SHOWN);
    rendu = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
    SDL_SetRenderDrawColor(rendu, 255, 255, 255, 255);
    SDL_RenderClear(rendu);
    SDL_RenderPresent(rendu);

    texture1 = SDL_CreateTextureFromSurface(rendu, surface1);

    SDL_Rect rect;
    rect.x = 100;
    rect.y = 200;
    rect.w = 50;
    rect.h = 50;

    SDL_RenderCopy(rendu, texture1, NULL, &rect);

    SDL_RenderPresent(rendu);

    while(run)
    {

        SDL_WaitEvent(&event);
        if(event.type == SDL_QUIT)
        {
            run = SDL_FALSE;
        }

        if(event.type == SDL_KEYDOWN)
        {
            if(event.key.keysym.sym == SDLK_RIGHT)
            {
                rect.x++;
            }

             if(event.key.keysym.sym == SDLK_LEFT)
            {
                rect.x--;
            }

             if(event.key.keysym.sym == SDLK_UP)
            {
                rect.y--;
            }

             if(event.key.keysym.sym == SDLK_DOWN)
            {
                rect.y++;
            }
        }

        SDL_RenderClear(rendu);

         SDL_RenderCopy(rendu, texture1, NULL, &rect);

    SDL_RenderPresent(rendu);


    }


    SDL_Delay(0);


    SDL_FreeSurface(surface2);
    SDL_FreeSurface(surface1);
    SDL_DestroyTexture(texture2);
    SDL_DestroyTexture(texture1);
    SDL_DestroyRenderer(rendu);
    SDL_DestroyWindow(window);
    SDL_Quit();
    return 0;
}