Eroare de compilare: user.cpp: In function ‘int main()’: user.cpp:13:27: error: ‘i’ was not declared in this scope for(int sub=1;sub<(1<<n);i++){ ^ user.cpp:15:18: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] if(sub&(1<<j-1))cout<<j<<' '; ^ user.cpp:7:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("submultimi.in","r",stdin); ^ user.cpp:8:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("submultimi.out","w",stdout); ^