怎样输出一个 % 号到缓冲中啊？

[ququshb]

char buffer[50];
::Zeromemory(buffer,50)
printf(buffer, ????);

我想让 buffer 中的内容为 "This is %d."
那个 %d 是buffer中的内容
该怎么做啊

[anothervip]

%%d 可以吗？

或者："%% %c",'d'

[everandforever]

printf(buffer, "This is %\x064.");

[用户 昵称]

%%

[everandforever]

...
\\ Backslash
\? Literal question mark
\ooo ASCII character in octal notation
\xhhh ASCII character in hexadecimal notation

[sans]

printf( "This is \%d");

[sans]

printf( "This is %%d.");

[miaoweijun]

%%d

[albert]

printf("This is %% %d.", ????);

[ququshb]

试了下
只能用 %%
不能用 \%d %\0x64
原因如下%[flags] [width] [.precision] [{h | l | I64 | L}]type

Each field of the format specification is a single character or a number signifying a particular format option. The simplest format specification contains only the percent sign and a type character (for example, %s). If a percent sign is followed by a character that has no meaning as a format field, the character is copied to stdout. For example, to print a percent-sign character, use %%.

谢谢大家