int a = 4294965296;
char *str = "a STr";
printf("0x%08x\n", a); //输出8位16进制数，不足补零，结果： 0xfffff830
printf("0x%p\n", str); //输出指针地址 结果： 0x004156BC
|
字符 |
输入数据类型 |
含义 |
|
d、i |
int |
有符号10进制数，i是老式写法 |
|
o |
unsigned int |
无符号8进制数 |
|
u |
unsigned int |
无符号10进制数 |
|
x、X |
unsigned int |
无符号16进制数，x用abcdef，X用ABCDEF表示10~15的数 |
|
f |
double |
小数 |
|
e、E |
double |
科学计数法表示的数，大小写代表用的“e”的大小写 |
|
g、G |
double |
使用以上两种中最短的形式，大小写的使用同%e和%E |
|
c |
char |
把输入的数字转换为对应的字符 |
|
s、S |
char *、wchar_t * |
字符串 |
|
p |
void * |
以16进制形式输出指针 |
|
n |
int * |
到此字符之前为止，一共输出的字符个数，不输出文本 |
|
% |
不输入 |
输出字符“%”本身 |
附：MFC中的CTime格式化输出
CTime time = CTime::GetCurrentTime();
CString msgContent = time.Format("Current Date is: %x(%Y-%b(%m)-%d), %U weeks of year, %A, %H:%M:%S, %I");
输出结果：
Current Date is: 11/02/13(2013-Nov(11)-02), 43 weeks of year, Saturday, 00:48:53, 12
http://msdn.microsoft.com/en-us/library/vstudio/fe06s4ak.aspx
%a Abbreviated weekday name %A Full weekday name %b Abbreviated month name %B Full month name %c Date and time representation appropriate for locale %d Day of month as decimal number (01 – 31) %H Hour in 24-hour format (00 – 23) %I Hour in 12-hour format (01 – 12) %j Day of year as decimal number (001 – 366) %m Month as decimal number (01 – 12) %M Minute as decimal number (00 – 59) %p Current locale's A.M./P.M. indicator for 12-hour clock %S Second as decimal number (00 – 59) %U Week of year as decimal number, with Sunday as first day of week (00 – 53) %w Weekday as decimal number (0 – 6; Sunday is 0) %W Week of year as decimal number, with Monday as first day of week (00 – 53) %x Date representation for current locale %X Time representation for current locale %y Year without century, as decimal number (00 – 99) %Y Year with century, as decimal number %z, %Z Either the time-zone name or time zone abbreviation, depending on registry settings; no characters if time zone is unknown
