zumzi.cpp:4: syntax error before `g' zumzi.cpp: In function `int main()': zumzi.cpp:6: `n' undeclared (first use this function) zumzi.cpp:6: (Each undeclared identifier is reported only once for each function it appears in.) zumzi.cpp:6: `m' undeclared (first use this function) zumzi.cpp:6: `k' undeclared (first use this function) zumzi.cpp:6: `x' undeclared (first use this function)