View Compilation Error

0_0_4385806_6923.cpp: In function `int main()':
0_0_4385806_6923.cpp:9: error: `n' undeclared (first use this function)
0_0_4385806_6923.cpp:9: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_4385806_6923.cpp:10: error: `dp' undeclared (first use this function)
0_0_4385806_6923.cpp:17: error: name lookup of `i' changed for new ISO `for' scoping
0_0_4385806_6923.cpp:12: error:   using obsolete binding at `i'