View Compilation Error

0_0_10063347_15238.cpp: In function `Node* Creat()':
0_0_10063347_15238.cpp:18: error: `strcpy' undeclared (first use this function)
0_0_10063347_15238.cpp:18: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_10063347_15238.cpp: In function `void Insert(char*, char*)':
0_0_10063347_15238.cpp:36: error: `strcpy' undeclared (first use this function)
0_0_10063347_15238.cpp: In function `int main(int, char**)':
0_0_10063347_15238.cpp:91: error: `strcmp' undeclared (first use this function)