/in/foo.cc: In function 'int main()':
/in/foo.cc:16:6: error: 'n' was not declared in this scope
   if(n==2)
      ^
/in/foo.cc:18:4: error: 'c' was not declared in this scope
    c=(i/10%10)+(i/100);
    ^
/in/foo.cc:34:6: error: 'n' was not declared in this scope
   if(n==2)
      ^
/in/foo.cc:36:4: error: 'c' was not declared in this scope
    c=(i/10%10)+(i/100);
    ^