foo.cpp: In function 'int main()':
foo.cpp:18:15: error: 'scanf' was not declared in this scope
  scanf("%d",&N);
               ^
foo.cpp:17:6: warning: unused variable 'money' [-Wunused-variable]
  int money[100],most,total; 
      ^
foo.cpp:17:17: warning: unused variable 'most' [-Wunused-variable]
  int money[100],most,total; 
                 ^