foo.cc: In function 'int main()':
foo.cc:8:32: warning: 'd' is used uninitialized [-Wuninitialized]
    8 |         s=(a/10)+(b/5)+(c/2)+(d/2);
      |                              ~~^~~
foo.cc:5:15: note: 'd' was declared here
    5 |     int a,b,c,d;
      |               ^

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