Compilare: user.cpp: In function ‘bool verif(int)’: user.cpp:23:54: warning: unused variable ‘xx’ [-Wunused-variable] int i,j,xM = -INF, yM = -INF, xm = INF, ym = INF,xx; ^ user.cpp: In function ‘int main()’: user.cpp:76:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("centru.in","r",stdin); ^ user.cpp: In function ‘int ianr()’: user.cpp:57:45: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buf , D , 1 , stdin) , poz = 0; ^ user.cpp:69:49: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] fread(buf , D , 1 , stdin) , poz = 0; ^