View Compilation Error

52208_0_12723.cpp: In function `int main()':
52208_0_12723.cpp:7: error: `m' undeclared (first use this function)
52208_0_12723.cpp:7: error: (Each undeclared identifier is reported only once for each function it appears in.)
52208_0_12723.cpp:7: error: `n' undeclared (first use this function)