foo.c: In function 'main':
foo.c:3:25: warning: variable 's' set but not used [-Wunused-but-set-variable]
    3 |         int a, b, y, p, s,t,j;
      |                         ^
foo.c:3:22: warning: unused variable 'p' [-Wunused-variable]
    3 |         int a, b, y, p, s,t,j;
      |                      ^
foo.c:3:19: warning: unused variable 'y' [-Wunused-variable]
    3 |         int a, b, y, p, s,t,j;
      |                   ^

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