Compilare: user.cpp: In function ‘void solve(long long int, long long int)’: user.cpp:23:25: warning: unused variable ‘semnplus’ [-Wunused-variable] long long semnexc=0,semnplus=0,semnimp=0,ans=0,semnpow=0,a[101],num=0,ant=0,cif[101],aux; ^ user.cpp: In function ‘int main()’: user.cpp:93:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("evaluare2.in","r",stdin); ^ user.cpp:94:40: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("evaluare2.out","w",stdout); ^ user.cpp:95:12: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(s); ^ /tmp/cc1j7RKr.o: In function `main': user.cpp:(.text.startup+0x56): warning: the `gets' function is dangerous and should not be used.