View Compilation Error

0_0_6793348_958.cpp: In function `int main()':
0_0_6793348_958.cpp:43: error: `mat_one' undeclared (first use this function)
0_0_6793348_958.cpp:43: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_6793348_958.cpp:52: error: `mat_ans' undeclared (first use this function)
0_0_6793348_958.cpp:52: error: `QuickPower' undeclared (first use this function)