View Compilation Error

0_0_1596552_23012.cpp: In function `int main()':
0_0_1596552_23012.cpp:16: error: `strcmp' undeclared (first use this function)
0_0_1596552_23012.cpp:16: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_1596552_23012.cpp:27: error: `system' undeclared (first use this function)