foo.cc:1:24: warning: extra tokens at end of #include directive
    1 | #include<bits/stdc++.h>；using namespace std;int main(){int a,b;cin>>a>>b;a += b;cout<<a<<endl;return 0;}
      |                        ^~~~~~~
/nix/store/nydwzhllkq0a21dny69zdjczh6v275lb-binutils-2.40/bin/ld: /nix/store/8bmp6r3a0xfha3wj36phlc47clh9w81l-glibc-2.35-224/lib/crt1.o: in function `_start':
(.text+0x1b): undefined reference to `main'
collect2: error: ld returned 1 exit status

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