foo.c: In function 'main':
foo.c:17:15: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[200]' [-Wformat=]
    scanf("%200s",&c);
           ~~~~^  ~~
foo.c:17:4: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%200s",&c);
    ^~~~~~~~~~~~~~~~~

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