View Compilation Error

F:	emp10087833.267976Main.cc: In function 'int main()':
F:	emp10087833.267976Main.cc:34: error: 'scanf' was not declared in this scope
F:	emp10087833.267976Main.cc:34: error: 'EOF' was not declared in this scope
F:	emp10087833.267976Main.cc:38: error: 'memset' was not declared in this scope
F:	emp10087833.267976Main.cc:70: error: 'printf' was not declared in this scope