Compilare: user.cpp: In function ‘int main()’: user.cpp:38:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &n); ^ user.cpp:41:35: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d", &sir[i]); ^ user.cpp:67:35: warning: ‘j’ may be used uninitialized in this function [-Wmaybe-uninitialized] while (previous[lengthVal[i++]]) ^