Please someone tell me where is the wrong in my code.

#include <iostream>
#include <queue>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
using namespace std;
struct dott{
    int x;
    int y;
};
int main()
{
    char str[8];
    gets(str);
    if(strlen(str) <= 2){
        int a, b, n;
        n = atoi(str);
        bool XY[200][200];
        memset(XY, 0, sizeof(XY));
        struct dott center;
        cin>>a>>b;
        center.x = a;
        center.y = b;
        for(int i=2; i<=n; i++){
            cin>>a>>b;
            XY[a][b] = 1;
        }
        queue<dott> qu;
        qu.push(center);
        cout<<center.x<<" "<<center.y<<"\n";
        while(!qu.empty()){
            dott pix = qu.front();
            qu.pop();
            if(XY[pix.x + 1][pix.y] == 1){
                cout<<"R";
                center.x = pix.x + 1;
                center.y = pix.y;
                qu.push(center);
                XY[pix.x + 1][pix.y] = 0;
            }
            if(XY[pix.x][pix.y + 1] == 1){
                cout<<"T";
                center.x = pix.x;
                center.y = pix.y + 1;
                qu.push(center);
                XY[pix.x][pix.y + 1] = 0;
            }
            if(XY[pix.x - 1][pix.y] == 1){
                cout<<"L";
                center.x = pix.x - 1;
                center.y = pix.y;
                qu.push(center);
                XY[pix.x - 1][pix.y] = 0;
            }
            if(XY[pix.x][pix.y - 1] == 1){
                cout<<"B";
                center.x = pix.x;
                center.y = pix.y - 1;
                qu.push(center);
                XY[pix.x][pix.y - 1] = 0;
            }
            if(!qu.empty()){
                cout<<",\n";
            }
            else{
                cout<<".";
            }
        }
    }
    else{
        int a, b, count=0;
        bool XY[200][200];
        memset(XY, 0, sizeof(XY));
        struct dott centre;
        char *s;
        s = strtok(str," ");
        a = atoi(s);
        s = strtok(NULL," ");
        b = atoi(s);
        XY[a][b] = 1;
        centre.x = a;
        centre.y = b;
        queue<dott> qu;
        qu.push(centre);
        string str[200];
        for(int i=0; ;i++){
            cin>>str[i];
            if(str[i] == "."){
                break;
            }
            count++;
        }
        for(int i=0; i<count; i++){
            dott S = qu.front();
            qu.pop();
            for(int j=0; j<str[i].size(); j++){
                if(str[i][j] == 'R'){
                    XY[S.x+1][S.y] = 1;
                    centre.x = S.x+1;
                    centre.y = S.y;
                    qu.push(centre);
                }
                if(str[i][j] == 'T'){
                    XY[S.x][S.y+1] = 1;
                    centre.x = S.x;
                    centre.y = S.y+1;
                    qu.push(centre);
                }
                if(str[i][j] == 'L'){
                    XY[S.x-1][S.y] = 1;
                    centre.x = S.x-1;
                    centre.y = S.y;
                    qu.push(centre);
                }
                if(str[i][j] == 'B'){
                    XY[S.x][S.y-1] = 1;
                    centre.x = S.x;
                    centre.x = S.y-1;
                    qu.push(centre);
                }
            }

        }
        cout<<count+1<<"\n";
        for(int i=0; i<100; i++){
            for(int j=0; j<100; j++){
                if(XY[i][j] == 1){
                    cout<<i<<" "<<j<<"\n";
                }
            }
        }
    }
    return 0;
}

Edited by author 09.01.2017 17:37