Serial.println("--- start of loop()");charstr1[24] ="some str1";//allow extra space for appendCharsTocharstr2[] ="some str2 other text"; createSafeStringFromCharArray(sfStr1, str1);//or cSFA(sfStr1,str1); for short. Wrap str1 in a SafeStringappendCharsTo(sfStr1);if(Safe...
char Str2[8] = {'a', 'r', 'd', 'u', 'i', 'n', 'o'}; char Str3[8] = {'a', 'r', 'd', 'u', 'i', 'n', 'o', '\0'}; char Str4[ ] = "arduino"; char Str5[8] = "arduino"; char Str6[15] = "arduino"; 声明字符串的解释 在Str1中 声明一个没有初始化...
11.2 boolean(布尔) 11.3 char(有号数据类型) 11.4 unsigned char(无符号数据类型) 11.5 byte(无符号数) 11.6 int(整型) 11.7 unsigned int(无符号整型) 11.8 word 11.9 long(长整数型) 11.10 unsigned long(无符号长整数型) 11.11 float(浮点型数) 11.12 double(双精度浮点数) 11.13 string(char array/字符...
11.13 string( char array/字符串) 11.14 String object( String类) 11.15 array(数组) 十二、数据类型转换 12.1 char() 12.2 byte() 12.3int() 12.4 word() 12.5 long() 12.6 float() 十三、变量作用域&修饰符 13.1 variable scope(变量的作用域) 13.2 static(静态变量) 13.3 volatile 13.4 const 十四、...
11.4 unsigned char(无符号数据类型) 11.5 byte(无符号数) 11.6 int(整型) 11.7 unsigned int(无符号整型) 11.8 word 11.9 long(长整数型) 11.10 unsigned long(无符号长整数型) 11.11 float(浮点型数) 11.12 double(双精度浮点数) 11.13 string(char array/字符串) ...
char(有号数据类型) unsignedchar(无符号数据类型) byte(无符号数) int(整型) unsignedint(无符号整型) word long(长整数型) unsignedlong(无符号长整数型) float(浮点型数) double(双精度浮点数) string(chararray/字符串) String object(String类) array(数组) 十二、数据类型转换 char() byte()12.3int()...
void setup() { char my_str[6]; // an array big enough for a 5 character string Serial.begin(9600); my_str[0] = 'H'; // the string consists of 5 characters my_str[1] = 'e'; my_str[2] = 'l'; my_str[3] = 'l'; my_str[4] = 'o'; my_str[5] = 0; // 6th ...
字符串是一个特殊的数组，在字符串的末尾有一个额外的元素，其值总是为0（零）。这被称为“空终止字符串”。此示例将显示如何创建字符串并将其打印到串口监视器窗口。例 void setup() { char my_str[6]; // an array big enough for a 5 character string Serial.begin(9600);my_str[0] = 'H'; ...
char sTemp[5] = ""; //convert float to char*, dtostrf(temp, 2, 2, sTemp); //val, integer part width, precise, result char array //itoa(temp, sTemp,10); Serial.println(sTemp); char sLength[3]; //prepare the http body
char fileArray[64]; String fullPath; sprintf(fileArray, DIR_FORMAT, nextDirIndex); // Generate subdirectory name fullPath = BOTTOM_DIR + String(fileArray); // Make a filepath out of it, then return arcada.mkdir(fullPath.c_str()); // try to make a real subdirectory from it ...