Compilare: user.cpp: In function ‘int main()’: user.cpp:21:5: warning: unused variable ‘de_licious’ [-Wunused-variable] int de_licious=1,i,j,nrcentrale,costlimita; ^ user.cpp:21:20: warning: unused variable ‘j’ [-Wunused-variable] int de_licious=1,i,j,nrcentrale,costlimita; ^ user.cpp:18:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("energii.in","r",stdin); ^ user.cpp:19:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("energii.out","w",stdout); ^ user.cpp:23:39: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d",&nrcentrale,&costlimita); ^ user.cpp:26:39: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d",&v[i].en,&v[i].cost); ^