Compilare: user.cpp: In function ‘int main()’: user.cpp:57:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("poligon.in","r",stdin); ^ user.cpp:58:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("poligon.out","w",stdout); ^ user.cpp:60:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:63:52: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lf%lf",&poligon[i].x,&poligon[i].y); ^ user.cpp:69:56: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lf%lf",&punctDeVerif.x,&punctDeVerif.y); ^ user.cpp: In function ‘punct centrugreutate(punct*)’: user.cpp:40:19: warning: ‘sumY’ may be used uninitialized in this function [-Wmaybe-uninitialized] raspuns.y=sumY/n; ^ user.cpp:39:19: warning: ‘sumX’ may be used uninitialized in this function [-Wmaybe-uninitialized] raspuns.x=sumX/n; ^ user.cpp: In function ‘int main()’: user.cpp:40:19: warning: ‘sumY’ may be used uninitialized in this function [-Wmaybe-uninitialized] raspuns.y=sumY/n; ^ user.cpp:33:12: note: ‘sumY’ was declared here double sumY; ^ user.cpp:39:19: warning: ‘sumX’ may be used uninitialized in this function [-Wmaybe-uninitialized] raspuns.x=sumX/n; ^ user.cpp:32:12: note: ‘sumX’ was declared here double sumX; ^