View Compilation Error

0_0_8905605_6824.cpp: In function `int main()':
0_0_8905605_6824.cpp:8: error: `N' undeclared (first use this function)
0_0_8905605_6824.cpp:8: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_8905605_6824.cpp:21: error: `end' undeclared (first use this function)