foo.c: In function 'main':
foo.c:7:3: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
    7 |   for(i=0;i<101;i++)
      |   ^~~
foo.c:9:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
    9 |  for(j=0;j<101;j++)
      |  ^~~
foo.c:8:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
    8 |  scanf("%c ",&a[i]);
      |  ^~~~~~~~~~~~~~~~~~

[Hydro](https://hydro.ac)提供评测服务