Compilare: user.cpp: In function ‘int main()’: user.cpp:35:105: warning: variable ‘semnx’ set but not used [-Wunused-but-set-variable] int start_vertical, finish_vertical,start_orizontal,finish_orizontal,xinv=0,yinv=0,d_oriz,d_vert,cx,cy,semnx=1,semny=1; ^ user.cpp:35:113: warning: variable ‘semny’ set but not used [-Wunused-but-set-variable] int start_vertical, finish_vertical,start_orizontal,finish_orizontal,xinv=0,yinv=0,d_oriz,d_vert,cx,cy,semnx=1,semny=1; ^ user.cpp:41:30: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("parc.in","r",stdin); ^ user.cpp:42:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("parc.out","w",stdout); ^ user.cpp:43:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d\n",&xp,&yp); ^ user.cpp:44:42: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d %d\n",&xg,&yg,&xpr,&ypr); ^ user.cpp:72:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n",&m); ^ user.cpp:76:49: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] { scanf("%d %d\n",&p_vert[0][i],&p_vert[1][i]); ^ user.cpp:83:49: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] { scanf("%d %d\n",&p_vert[0][i],&p_vert[1][i]); ^ user.cpp:87:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n",&n); ^ user.cpp:90:49: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] { scanf("%d %d\n",&p_oriz[0][i],&p_oriz[1][i]); ^ user.cpp:97:49: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] { scanf("%d %d\n",&p_oriz[0][i],&p_oriz[1][i]); ^