View Compilation Error

0_0_2576880_3681.cpp: In function `int main()':
0_0_2576880_3681.cpp:8: error: `m' undeclared (first use this function)
0_0_2576880_3681.cpp:8: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_2576880_3681.cpp:10: error: `summ' undeclared (first use this function)