View Compilation Error

0_0_8903933_53.cpp: In function `int main()':
0_0_8903933_53.cpp:19: error: `strcmp' undeclared (first use this function)
0_0_8903933_53.cpp:19: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_8903933_53.cpp:21: error: `strcpy' undeclared (first use this function)