Compilare: user.cpp: In function ‘int main()’: user.cpp:40:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (in,"%d",&n); ^ user.cpp:42:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf (in,"%d%d",&v[i].inc,&v[i].sf); ^ user.cpp: In function ‘void qsort(int, int)’: user.cpp:13:5: warning: ‘pivot.interval::sf’ may be used uninitialized in this function [-Wmaybe-uninitialized] while (v[inc].sf < pivot.sf) ^