Compilare: main.cpp: In function 'int main()': main.cpp:12:7: warning: 'x1' is used uninitialized in this function [-Wuninitialized] xp = x1; ~~~^~~~ main.cpp:13:8: warning: 'y1' is used uninitialized in this function [-Wuninitialized] yp = y1; ~~~^~~~ main.cpp:14:22: warning: 'n' is used uninitialized in this function [-Wuninitialized] for(int i = 2; i <= n; i++) ~~^~~~ main.cpp:10:20: warning: 'x2' may be used uninitialized in this function [-Wmaybe-uninitialized] int n, x1, y1, x2, y2, xp, yp; ^~ main.cpp:10:24: warning: 'y2' may be used uninitialized in this function [-Wmaybe-uninitialized] int n, x1, y1, x2, y2, xp, yp; ^~