oras1.cpp:51: error: ISO C++ forbids declaration of 'pdoi' with no type oras1.cpp: In function 'int pdoi()': oras1.cpp:84: warning: no return statement in function returning non-void oras1.cpp: At global scope: oras1.cpp:86: error: ISO C++ forbids declaration of 'ptrei' with no type oras1.cpp: In function 'int ptrei()': oras1.cpp:121: warning: no return statement in function returning non-void