Compilare: user.cpp: In function ‘int main()’: user.cpp:63:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin , "%d%d\n" , &n , &k); ^ user.cpp:68:32: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin , "%c" , &c); ^ user.cpp: In function ‘int pivot(int, int, int)’: user.cpp:38:41: warning: ‘i2’ may be used uninitialized in this function [-Wmaybe-uninitialized] else if(v[i1]<v[poz] && v[i2]<v[poz])i1++; ^ user.cpp:29:16: warning: ‘i1’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(v[i1]>v[poz] && v[i2]<v[poz]) ^