Compilare: user.cpp: In function ‘int main()’: user.cpp:12:36: warning: unused variable ‘ans’ [-Wunused-variable] int n,i,ST,DR,MJ,cfPRE = 0,poz,ans = 0,lim; ^ user.cpp:12:44: warning: unused variable ‘lim’ [-Wunused-variable] int n,i,ST,DR,MJ,cfPRE = 0,poz,ans = 0,lim; ^ user.cpp:9:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("euro2.in","r",stdin); ^ user.cpp:10:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("euro2.out","w",stdout); ^ user.cpp:13:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n",&n); ^ user.cpp:16:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s",nr); ^