foo.c: In function 'main':
foo.c:9:13: warning: unused variable 'b' [-Wunused-variable]
    9 |     int a=1,b=47;
      |             ^
foo.c:9:9: warning: unused variable 'a' [-Wunused-variable]
    9 |     int a=1,b=47;
      |         ^

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