[c] format string with filed width.
[c] format string with filed width.

sgkim126/snippets,sgkim126/snippets,sgkim126/snippets,sgkim126/snippets,sgkim126/snippets,sgkim126/snippets,sgkim126/snippets,sgkim126/snippets,sgkim126/snippets,sgkim126/snippets,sgkim126/snippets,sgkim126/snippets