Compilare: main.cpp: In function 'int main()': main.cpp:18:24: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &x); ^ main.cpp:26:42: warning: 'endpos' may be used uninitialized in this function [-Wmaybe-uninitialized] fout << smax << ' ' << endpos + 1 << ' ' << begpos + 1 << std::endl; ^~~ main.cpp:26:58: warning: 'begpos' may be used uninitialized in this function [-Wmaybe-uninitialized] fout << smax << ' ' << endpos + 1 << ' ' << begpos + 1 << std::endl; ^