View Compilation Error

0_0_29809000_31296.cpp: In function 'int main()':
0_0_29809000_31296.cpp:7:2: error: 'nbsp' was not declared in this scope
     int m,n,i,j;
  ^
0_0_29809000_31296.cpp:31:80: error: 'else' without a previous 'if'
               else  
                                                                                ^