简介: uin8_t uint16_t uint32_t 数据类型相互转换 1. uint8_t 转uint16_tuint8_t u8[4] = {0x12,0x34,0x56,0x78}; uint16_t u16[2] = {0}; u16[0] = (u8[1] << 8) + u8[0]; u16[1] = (u8[3] << 8) + u8[2]; ...
}8.NSString 转NSData NSData*data = [aString dataUsingEncoding:NSUTF8StringEncoding];//通过utf-8转为data9.NSData转Uint8+ (uint8_t)uint8FromBytes:(NSData *)fData { NSAssert(fData.length==1,@"uint8FromBytes: (data length != 1)"); NSData*data =fData; uint8_t val=0; [data ge...
int8_t 强转为uint8_t int16_t 强转为uint16_t int32_t 强转为uint32_t#无符号转有符号如: uint8_t 强转为int8_t uint16_t 强转为int16_t uint32_t 强转为int32_t 举例: int32_t val = -121; uint32_t new = (uint32_t)val; printf("val = 0x%x, %d, new = 0x%x, %d\n",...
9.NSData转Uint8 + (uint8_t)uint8FromBytes:(NSData *)fData { NSAssert(fData.length == 1, @"uint8FromBytes: (data length != 1)"); NSData *data = fData; uint8_t val = 0; [data getBytes:&val length:1]; return val; } 10.NSData转Uint16 + (uint16_t)uint16FromBytes:(N...
本文翻译自Windows Forms: Convert an image into grayscale in C# 这篇文章向你展示在C# Windows窗体...
uint16_t%hu uint32_t%u uint64_t%llu 5、uint8_t类型的输出: 注意uint8_t的定义为 代码语言:javascript 复制 typedef unsigned char uint8_t; uint8_t实际上是一个char。所以输出uint8_t类型的变量实际上输出其对应的字符,而不是数值。例:
int类型转16进制hexstring 2.16进制转换为NSData 3.NSData转16进制 4.NSString转int类型 5.uint8转NSData(占两位) ...
为了代码编写和阅读方便,我们通常会将数据类型名称声明为简写方式,即uin8_t/uint16_t/uint32_t/uint64_t,或者UINT8/UINT16/UINT32/UINT64。因此uin*_t并不是新的数据类型,而是通过关键字typedef声明后的数据形式。 typedefcharINT8; typedefshortINT16; ...
uint16_t%huuint32_t%uuint64_t%llu 5、uint8_t类型的输出: 注意uint8_t的定义为 typedefunsignedcharuint8_t; uint8_t实际上是一个char。所以输出uint8_t类型的变量实际上输出其对应的字符,而不是数值。例: uint8_tnum=67;cout<<num<<endl; ...
include <reg52.h>typedef unsigned int uint16//;typedef unsigned char uint8//;【分号也要去掉】sbit DIOLA = P2^5;main (){ uint16 i;//【把定义放到最前面就可以了】 uint8 j; DIOLA = 1;while (1) { P1 = ~(1<<j++); for (i=0;i<20000;i++);if (j=...