关于printf函数打印二进制问题！

[C_520]

printf函数有一个能直接打印２进制的格式吧，那位大哥知道告诉告诉我，谢谢了

#include <stdio.h>

int main(void)
{
int i = 31;

printf("i = %b\n", i);

return 0;
}

[Rocyee]

%x 十六进制

[Rocyee]

目前printf支持以下格式：
%c 单个字符
%d 十进制整数
%f 十进制浮点数
%o 八进制数
%s 字符串
%u 无符号十进制数
%x 十六进制数
%% 输出百分号%

[winter_plusplus]

Size Prefixes for scanf and wscanf Format-Type Specifiers
To Specify Use Prefix With Type Specifier
double l e, E, f, g, or G
long double (same as double) L e, E, f, g, or G
long int l d, i, o, x, or X
long unsigned int l u
short int h d, i, o, x, or X
short unsigned int h u
__int64 I64 d, i, o, u, x, or X
Single-byte character with scanf h c or C
Single-byte character with wscanf h c or C
Wide character with scanf l c or C
Wide character with wscanf l c, or C
Single-byte – character string with scanf h s or S
Single-byte – character string with wscanf h s or S
Wide-character string with scanf l s or S
Wide-character string with wscanf l s or S


Following are examples of the use of h and l with scanf functions and wscanf functions:

scanf( "%ls", &x ); // Read a wide-character string
wscanf( "%lC", &x ); // Read a single-byte character

[jixingzhong]

不能直接打印 2进制
需要处理一下才可以 .....

[jixingzhong]

#include<stdio.h>
#include<conio.h>
#include<stdlib.h>


void main()
{
int i = 31;
char s[10];

itoa(i, s, 2); //转换成字符串，进制基数为2
printf("%s",s); //输出
getch();
}