View Compilation Error

0_0_31939027_24584.cpp: In function 'int main()':
0_0_31939027_24584.cpp:93:30: error: 'n' was not declared in this scope
  while(scanf("%lld%lld%lld",&n,&c,&d),n+c+d)
                              ^
0_0_31939027_24584.cpp:93:33: error: 'c' was not declared in this scope
  while(scanf("%lld%lld%lld",&n,&c,&d),n+c+d)
                                 ^
0_0_31939027_24584.cpp:93:36: error: 'd' was not declared in this scope
  while(scanf("%lld%lld%lld",&n,&c,&d),n+c+d)
                                    ^