View Compilation Error

0_0_23331807_9982.cpp: In function 'int main()':
0_0_23331807_9982.cpp:7:2: error: 'nbsp' was not declared in this scope
     int a[4],ok=0;
  ^
0_0_23331807_9982.cpp:11:76: error: break statement not within loop or switch
         if(a[0]+a[1]+a[2]+a[3]==0) break;
                                                                            ^
0_0_23331807_9982.cpp:24:73: error: 'else' without a previous 'if'
             else
                                                                         ^