timer.cpp: In function `int main()': timer.cpp:7: warning: unused variable `long int x' timer.cpp:7: warning: unused variable `long int y' timer.cpp:7: warning: unused variable `long int z' timer.cpp:7: warning: `long int h2' might be used uninitialized in this function timer.cpp:7: warning: `long int m2' might be used uninitialized in this function timer.cpp:7: warning: `long int s2' might be used uninitialized in this function