Compilare: user.cpp: In function ‘float Q_rsqrt(float)’: user.cpp:26:21: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] i = * ( long * ) &y; ^ user.cpp:28:22: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] y = * ( float * ) &i; ^ user.cpp: In function ‘double kruskal()’: user.cpp:66:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (; i < muchii.size() && j < n; i++) { ^ user.cpp: In function ‘void rezolvare()’: user.cpp:84:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d ", &n); ^ user.cpp:86:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d ", &p[i].x, &p[i].y); ^ user.cpp: In function ‘int main()’: user.cpp:99:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("desen.in", "r", stdin); ^