foo.c: In function 'main':
foo.c:5:1: warning: 'x' is used uninitialized [-Wuninitialized]
    5 | printf("%d",x+y);
      | ^~~~~~~~~~~~~~~~
foo.c:4:5: note: 'x' was declared here
    4 | int x,y;
      |     ^
foo.c:5:1: warning: 'y' is used uninitialized [-Wuninitialized]
    5 | printf("%d",x+y);
      | ^~~~~~~~~~~~~~~~
foo.c:4:7: note: 'y' was declared here
    4 | int x,y;
      |       ^

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