View Compilation Error

0_0_20699019_24098.cpp: In function 'int gcd(int, int)':
0_0_20699019_24098.cpp:3:2: error: 'nbsp' was not declared in this scope
  return !b ? a:gcd(b,a%b);
  ^
0_0_20699019_24098.cpp: In function 'int main()':
0_0_20699019_24098.cpp:6:2: error: 'nbsp' was not declared in this scope
  int n,a,b,c,d,p,q,m;
  ^