View Compilation Error

0_0_1143208_20249.cpp: In function `int main()':
0_0_1143208_20249.cpp:65: error: `prime' undeclared (first use this function)
0_0_1143208_20249.cpp:65: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_1143208_20249.cpp:67: error: `N' undeclared (first use this function)