title: Difference between char* and wchar_t*
body: <p>I am new to MFC. I am trying to do simple mfc application and I'm getting confuse in some places. For example, <code>SetWindowText</code> have two api, <code>SetWindowTextA</code>, <code>SetWindowTextW</code> one api takes <code>char *</code> and another one accepts <code>wchar_t *</code>.</p>
  
  <p>What is the use of <code>char *</code> and <code>wchar_t *</code>?</p>