Compilare: user.cpp: In function ‘bool bellmanFord()’: user.cpp:126:16: warning: suggest parentheses around assignment used as truth value [-Wparentheses] vis[i] = dad[i] = 0; ^ user.cpp: In function ‘std::pair<double, double> read()’: user.cpp:27:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lf%lf", &x, &y); ^ user.cpp: In function ‘int main()’: user.cpp:182:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("adapost.in", "r", stdin); ^ user.cpp:183:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("adapost.out", "w", stdout); ^ user.cpp:186:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &n); ^ user.cpp:188:52: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lf%lf", &soldat[i].x, &soldat[i].y); ^ user.cpp:190:54: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lf%lf", &adapost[i].x, &adapost[i].y); ^ user.cpp: In function ‘double bs(double, double)’: user.cpp:86:12: warning: ‘last’ may be used uninitialized in this function [-Wmaybe-uninitialized] return last; ^