View Compilation Error

258727_0_19072.cpp: In function `int main()':
258727_0_19072.cpp:4: error: `n' undeclared (first use this function)
258727_0_19072.cpp:4: error: (Each undeclared identifier is reported only once for each function it appears in.)
258727_0_19072.cpp:5: error: `i' undeclared (first use this function)
258727_0_19072.cpp:6: error: `a' undeclared (first use this function)
258727_0_19072.cpp:6: error: `b' undeclared (first use this function)
258727_0_19072.cpp:7: error: `j' undeclared (first use this function)
258727_0_19072.cpp:8: error: `c' undeclared (first use this function)
258727_0_19072.cpp:9: error: `w' undeclared (first use this function)
258727_0_19072.cpp:10: error: `k' undeclared (first use this function)
258727_0_19072.cpp:11: error: `q' undeclared (first use this function)
258727_0_19072.cpp:13: error: `d' undeclared (first use this function)
258727_0_19072.cpp:14: error: `e' undeclared (first use this function)