Compilare: main.cpp: In function 'int Euclid_extins(int, int, int&, int&)': main.cpp:11:15: warning: variable 'd' set but not used [-Wunused-but-set-variable] 11 | int x0, y0, d; | ^ main.cpp:15:1: warning: control reaches end of non-void function [-Wreturn-type] 15 | } | ^ main.cpp: In function 'int main()': main.cpp:19:27: warning: 'd' may be used uninitialized in this function [-Wmaybe-uninitialized] 19 | for (int i = 1, a, b, c, d, x, y; i <= t; ++i) { | ^