Compilare: user.cpp: In function ‘bool test2()’: user.cpp:28:9: warning: unused variable ‘lc’ [-Wunused-variable] int lc=c,ld=d,lv=v; ^ user.cpp:28:14: warning: unused variable ‘ld’ [-Wunused-variable] int lc=c,ld=d,lv=v; ^ user.cpp:28:19: warning: unused variable ‘lv’ [-Wunused-variable] int lc=c,ld=d,lv=v; ^ user.cpp: In function ‘void solve()’: user.cpp:113:34: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d",&n,&d,&c,&v); ^ user.cpp:119:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&a,&b); ^ user.cpp: In function ‘int main()’: user.cpp:150:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("fantasy.in","r",stdin); ^ user.cpp:151:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("fantasy.out","w",stdout); ^ user.cpp:155:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&t); ^