string strDec = "天网";string strFirewall = "防火墙";//返回-1，表是不包含子字符串if((strSrc.find(strDec) != -1) && (strSrc.find(strFirewall) != -1)){AfxMessageBox("源字符串中包含要查找的子字符串");}else{AfxMessageBox("源字符串中No found 子字符串");}}
