Compilare: user.cpp: In function ‘int main()’: user.cpp:31:71: warning: variable ‘semnx’ set but not used [-Wunused-but-set-variable] int startv, finishv,starto,finisho,xinv=0,yinv=0,d_oriz,d_vert,cx,cy,semnx=1,semny=1; ^ user.cpp:31:79: warning: variable ‘semny’ set but not used [-Wunused-but-set-variable] int startv, finishv,starto,finisho,xinv=0,yinv=0,d_oriz,d_vert,cx,cy,semnx=1,semny=1; ^ user.cpp:34:30: 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:35:32: 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:36:26: 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:37:42: 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:58:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n",&m); ^ user.cpp:61:41: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] { scanf("%d %d\n",&pv[0][i],&pv[1][i]); ^ user.cpp:68:41: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] { scanf("%d %d\n",&pv[0][i],&pv[1][i]); ^ user.cpp:72:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n",&n); ^ user.cpp:75:41: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] { scanf("%d %d\n",&po[0][i],&po[1][i]); ^ user.cpp:82:41: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] { scanf("%d %d\n",&po[0][i],&po[1][i]); ^