Compilare: user.cpp: In function ‘int main()’: user.cpp:50:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &n); ^ user.cpp:54:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &v[i]); ^ user.cpp: In function ‘void divide(int*, int, int, int&, int&, int&)’: user.cpp:39:21: warning: ‘right’ may be used uninitialized in this function [-Wmaybe-uninitialized] stop = right; ^ user.cpp:38:21: warning: ‘left’ may be used uninitialized in this function [-Wmaybe-uninitialized] start = left; ^