foo.c: In function 'main':
foo.c:4:13: error: expected identifier or '(' before ';' token
     int i,n,;
             ^
foo.c:7:11: warning: format '%d' expects argument of type 'int *', but argument 2 has type 'float *' [-Wformat=]
   scanf("%d",&j);
          ~^  ~~
          %e
foo.c:6:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
  ^~~~~~~~~~~~~~
foo.c:7:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&j);
   ^~~~~~~~~~~~~~

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