View Compilation Error

0_0_20438544_16297.cpp: In function 'int main()':
0_0_20438544_16297.cpp:4:2: error: 'nbsp' was not declared in this scope
     int m, n, i, j;
  ^
0_0_20438544_16297.cpp:13:73: error: 'else' without a previous 'if'
             else
                                                                         ^