i need help with SDL

im having a problem with getting my snake a vector on line 71 it said the no 'operator='

im trying to make it a vector so i can make it so the snake to grow when it eats
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#include <cstdlib>
#include<iostream>
#include "SDL/SDL.h"
#include <string>
#include <ctime>
#include <vector>


SDL_Surface *screen;
int showmenu(){
std::cout<<"what game would you like to play"<<std::endl;
std::string game;
std::cin>>game;
}

void borders(int x, int y, Uint32 color,int w,int h){
    SDL_Rect Tmp = {x,y,w,h};
    SDL_FillRect(screen,&Tmp,color);
}

bool coll(SDL_Rect rect){
    rect.x;
    rect.y;
if(10==rect.x){
    return false;
}
else if (10==rect.y){
    return false;
}
else if (630==rect.x){
    return false;
}
else if (470==rect.y){
    return false;
}
else{
    return true;
}
}


int main(int argc, char** argv)
{

        srand(time(0));
        int width=640;
        int height=480;
        SDL_Init(SDL_INIT_EVERYTHING);



        screen = SDL_SetVideoMode(width, height, 32, SDL_SWSURFACE);
        bool running = true;
        int FPS = 80;
        Uint32 start;
        bool b[4]={0,0,0,0};
        SDL_Rect rect;
        rect.x = 30;
        rect.y = 30;
        rect.w = 20;
        rect.h = 20;

        int foodX =rand()%600+10;
        int foodY =rand()%430+10;



        // Snake and Screen  colors
        Uint32 backRound = SDL_MapRGB(screen->format, 0xff,0xff,0xff);
        std::vector<Uint32>snakeBody[4];
         snakeBody[1] = SDL_MapRGB(screen->format, 0,0,0xff);
         //snakeBody[1] = borders(rect.x,rect.y,SDL_MapRGB(screen->format, 0,0,0xff),rect.w,rect.h);


        while(running) {
                start = SDL_GetTicks();

                SDL_Event event;
                while(SDL_PollEvent(&event)) {
                switch(event.type) {
                    case SDL_QUIT:
                      running = false;
                      break;

                      case SDL_KEYDOWN:
                     switch(event.key.keysym.sym){
                    case SDLK_UP:
                        b[0]=1;
                        b[1]=0;
                        b[2]=0;
                        b[3]=0;
                        break;
                    case SDLK_LEFT:
                        b[0]=0;
                        b[1]=1;
                        b[2]=0;
                        b[3]=0;
                        break;
                    case SDLK_DOWN:
                        b[0]=0;
                        b[1]=0;
                        b[2]=1;
                        b[3]=0;
                        break;
                    case SDLK_RIGHT:
                        b[0]=0;
                        b[1]=0;
                        b[2]=0;
                        b[3]=1;
                        break;
                     }
                     break;

                }

                }
                int points=0;
                //snake eats
                if (foodY>=rect.y+rect.h);

                else if (foodX >=rect.x+rect.w);

                else if (foodY+rect.h<=rect.y);

                else if (foodX+rect.w<=rect.x);

                else{
                     foodX = rand()%620+10;
                     foodY = rand()%460+10;
                     int i=0;
                     ++i;

                     points += 1;
                     FPS+=10;
                     //snakeBody(i)=borders(rect.x-50,rect.y,SDL_MapRGB(screen->format,0,0,0xff),rect.w,rect.h);

                }



                //moving snake
                if(b[0] ){
                    rect.y--;
                }
                else if (b[1] ){
                    rect.x--;
                }
                else if (b[2] ){
                    rect.y++;
                }
                else if (b[3] ){
                    rect.x++;
                }


                SDL_FillRect(screen, &screen->clip_rect, backRound);
                SDL_FillRect(screen, &rect, snake);

                //Snake Food
                borders(foodX,foodY,SDL_MapRGB(screen->format,0,0xff,0),rect.w,rect.h);


                //border
                borders(0,0,SDL_MapRGB(screen->format,0xff,0,0),width,10);
                borders(0,0,SDL_MapRGB(screen->format,0xff,0,0),10,height);
                borders(0,height -10,SDL_MapRGB(screen->format,0xff,0,0),width-10,10);
                borders(width-10,0,SDL_MapRGB(screen->format,0xff,0,0),10,height);
                        SDL_Flip(screen);


                if(1000/FPS > SDL_GetTicks()-start) {
                        SDL_Delay(1000/FPS-(SDL_GetTicks()-start));
                }

                if (coll(rect)==false){
                    SDL_Quit();
                }
        }
        SDL_Quit();
        return 0;
}
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