foo.c: In function ‘main’:
foo.c:19:21: warning: this ‘if’ clause does not guard... [-Wmisleading-indentation]
   19 |                     if(j==i)
      |                     ^~
foo.c:21:25: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the ‘if’
   21 |                         b1=b1*lista[j];
      |                         ^~
foo.c: In function ‘gys’:
foo.c:45:1: warning: control reaches end of non-void function [-Wreturn-type]
   45 | }
      | ^