unupatru.cpp:6:18: conio.h: No such file or directory unupatru.cpp: In function `int main()': unupatru.cpp:81: `getch' undeclared (first use this function) unupatru.cpp:81: (Each undeclared identifier is reported only once for each function it appears in.) unupatru.cpp:39: warning: unused variable `float max' unupatru.cpp:39: warning: unused variable `float element' unupatru.cpp:40: warning: unused variable `long int r'