View Compilation Error

0_0_34558616_20118.cpp: In function 'bool fun(int)':
0_0_34558616_20118.cpp:3:10: error: 'b' was not declared in this scope
  int a = b = c = 0, k = n;
          ^
0_0_34558616_20118.cpp:3:14: error: 'c' was not declared in this scope
  int a = b = c = 0, k = n;
              ^
0_0_34558616_20118.cpp:9:42: error: 'k' was not declared in this scope
  if(a * a * a + b * b * b + c * c * c == k){
                                          ^