foo.c: In function 'main':
foo.c:6:9: error: 'x' undeclared (first use in this function)
    6 |         x=a+b>c&&c++,y=a||b++||c++;
      |         ^
foo.c:6:9: note: each undeclared identifier is reported only once for each function it appears in
foo.c:6:22: error: 'y' undeclared (first use in this function)
    6 |         x=a+b>c&&c++,y=a||b++||c++;
      |                      ^
foo.c:6:21: warning: left-hand operand of comma expression has no effect [-Wunused-value]
    6 |         x=a+b>c&&c++,y=a||b++||c++;
      |                     ^

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