Main.cc:1:21: warning: extra tokens at end of #include directive
#include using namespace std; int main(){ int x; cin>>x; if(x>0){ cout<<"1"; }else if(x<0){ cout<<"-1"; }else{ cout<<"0"; } }
^
/usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/crt1.o: In function `_start':
(.text+0x20): undefined reference to `main'
collect2: error: ld returned 1 exit status