View Compilation Error

0_0_29491490_23569.cpp: In function 'int main()':
0_0_29491490_23569.cpp:8:2: error: 'nbsp' was not declared in this scope
  int p,n,i,k=0;
  ^
0_0_29491490_23569.cpp:29:13: error: 'else' without a previous 'if'
   else if(p==2)
             ^
0_0_29491490_23569.cpp:45:13: error: 'else' without a previous 'if'
   else
             ^
0_0_29491490_23569.cpp:76:19: error: 'else' without a previous 'if'
    else
                   ^