Compilare: user.cpp: In function ‘int main()’: user.cpp:56:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi, "%d", &n); ^ user.cpp:58:52: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi, "%d%d", &in[i].first, &in[i].second); ^ user.cpp: In function ‘int sterge()’: user.cpp:34:18: warning: ‘ultim’ may be used uninitialized in this function [-Wmaybe-uninitialized] return ultim + 1; ^ user.cpp: In function ‘int calculate(int)’: user.cpp:49:10: warning: ‘lmax’ may be used uninitialized in this function [-Wmaybe-uninitialized] return lmax; ^