View Compilation Error

0_0_29338117_13137.cpp: In function 'int is_prime(int)':
0_0_29338117_13137.cpp:5:2: error: 'nbsp' was not declared in this scope
     for(int i=2;i<=sqrt(n);i++)
  ^
0_0_29338117_13137.cpp:7:34: error: 'i' was not declared in this scope
         if(n%i==0)
                                  ^
0_0_29338117_13137.cpp: In function 'int main()':
0_0_29338117_13137.cpp:14:2: error: 'nbsp' was not declared in this scope
     int n,sum;
  ^
0_0_29338117_13137.cpp:20:55: error: 'i' was not declared in this scope
             if(is_prime(i)&&is_prime(n-i))
                                                       ^