Arduino项目开发 Strings_StringSubstring_StringSubstring.pdf
版权申诉
159 浏览量
2022-07-06
19:09:44
上传
评论
收藏 2KB PDF 举报
/*
String substring()
Examples of how to use substring in a String
created 27 July 2010,
modified 2 Apr 2012
by Zach Eveland
http://www.arduino.cc/en/Tutorial/StringSubstring
This example code is in the public domain.
*/
void setup() {
// Open serial communications and wait for port to open:
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for native USB port only
}
// send an intro:
Serial.println("String substring():");
Serial.println();
}
void loop() {
// Set up a String:
String stringOne = "Content-Type: text/html";
Serial.println(stringOne);
// substring(index) looks for the substring from the index position to the en
d:
if (stringOne.substring(19) == "html") {
Serial.println("It's an html file");
}
// you can also look for a substring in the middle of a string:
if (stringOne.substring(14, 18) == "text") {
Serial.println("It's a text-based file");
}
// do nothing while true:
资源评论
