Compilare: user.cpp: In function ‘int main()’: user.cpp:23:15: warning: unused variable ‘val’ [-Wunused-variable] int i,t=0,val,ok=0,poz,num=0; ^ user.cpp:21:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("reteta2.in","r",stdin); ^ user.cpp:22:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("reteta2.out","w",stdout); ^ user.cpp:25:12: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(s); ^ user.cpp:51:42: warning: ‘poz’ may be used uninitialized in this function [-Wmaybe-uninitialized] v[poz].c=v[poz].c+atoi(p); ^ /tmp/cclso3gM.o: In function `main': user.cpp:(.text.startup+0x56): warning: the `gets' function is dangerous and should not be used.