foo.c: In function 'Add':
foo.c:22:19: warning: unused variable 'k' [-Wunused-variable]
   22 |         int i, j, k,jw=0;
      |                   ^
foo.c:22:16: warning: unused variable 'j' [-Wunused-variable]
   22 |         int i, j, k,jw=0;
      |                ^

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