Compilare: user.cpp: In function ‘int main()’: user.cpp:41:17: warning: ignoring return value of ‘int system(const char*)’, declared with attribute warn_unused_result [-Wunused-result] system("pause"); ^ user.cpp:40:16: warning: ‘solution’ may be used uninitialized in this function [-Wmaybe-uninitialized] cout<<solution; ^ user.cpp:17:18: warning: ‘upper_bound’ may be used uninitialized in this function [-Wmaybe-uninitialized] upper_bound*=n/k; ^