supertri.cpp: In function 'int main()': supertri.cpp:57: warning: unused variable 'top2' supertri.cpp:57: warning: unused variable 'st' supertri.cpp:57: warning: unused variable 'dr' supertri.cpp:58: warning: unused variable 'dif' supertri.cpp:57: warning: 'c' may be used uninitialized in this function supertri.cpp:57: warning: 'a' may be used uninitialized in this function supertri.cpp:57: warning: 'b' may be used uninitialized in this function