运行read_xml.c时出现的问题_xml文件操纵第二步

 //read_check.xml
<?xml version="1.0" encoding="UTF-8" ?>
<note year="55" date="33" month="22">
<id>5000</id>
<password>FE-D0-18-00</password>
</note>  

 jason@ubuntu:~/Desktop/project_xml_mysql$ gcc -o read_xml read_xml.c -lmxml -lpthread
read_xml.c: In function ‘main’:
read_xml.c:25:9: warning: assignment discards ‘const’ qualifier from pointer target type [enabled by default]
id_text=mxmlGetText(id,0);
^
read_xml.c:29:15: warning: assignment discards ‘const’ qualifier from pointer target type [enabled by default]
password_text=mxmlGetText(password,0);
^
jason@ubuntu:~/Desktop/project_xml_mysql$ ./read_xml
year:55
date:33
month:22
5000
FE-D0-18-00

出现这个问题是丢失了const限定符，在char id_text,password_text;前面加上const就可以完美解决这个问题。

jason@ubuntu:~/Desktop/project_xml_mysql$ gcc -o read_xml read_xml.c -lmxml -lpthread
jason@ubuntu:~/Desktop/project_xml_mysql$ ./read_xml
year:55
date:33
month:22
5000
FE-D0-18-00
jason@ubuntu:~/Desktop/project_xml_mysql$

参考文献：http://www.cnblogs.com/dyllove98/archive/2013/07/24/3212538.html