foo.c: In function 'main':
foo.c:8:6: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
    8 |      for(j=2;j<i;j++)
      |      ^~~
foo.c:10:7: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   10 |       if(j==i)s++;
      |       ^~
foo.c:5:4: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
    5 |    scanf("%d",&n);
      |    ^~~~~~~~~~~~~~

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