View Compilation Error

F:	emp9721219.11950Main.cc: In function 'int bfs()':
F:	emp9721219.11950Main.cc:25: error: 'strcpy' was not declared in this scope
F:	emp9721219.11950Main.cc:26: error: 'strcpy' was not declared in this scope
F:	emp9721219.11950Main.cc:27: error: 'strcpy' was not declared in this scope
F:	emp9721219.11950Main.cc:28: error: 'strcpy' was not declared in this scope
F:	emp9721219.11950Main.cc:38: error: 'strcpy' was not declared in this scope
F:	emp9721219.11950Main.cc:51: error: 'strcpy' was not declared in this scope
F:	emp9721219.11950Main.cc: In function 'int main()':
F:	emp9721219.11950Main.cc:61: error: 'scanf' was not declared in this scope
F:	emp9721219.11950Main.cc:61: error: 'EOF' was not declared in this scope
F:	emp9721219.11950Main.cc:63: error: 'memset' was not declared in this scope
F:	emp9721219.11950Main.cc:70: error: 'printf' was not declared in this scope
F:	emp9721219.11950Main.cc:71: error: 'printf' was not declared in this scope