Compilare: user.cpp: In function ‘int main()’: user.cpp:88:15: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] n = ianr(); ^ user.cpp: In function ‘int ianr()’: user.cpp:29:45: 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:41:49: 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; ^