源程序:abc.cvoid main(){ int a=2,b;b=3;if(a==b)a=b+a*b;elsea=b-a;}
http://wenku.baidu.com/link?url=3p7HOKYaylsoPj4bAEkhYtUEExZKJOOLmHY9Sfj-kGTmrPbNCrzUG6-iD0ur2v6XNeWJsSA2swhLHXsIKiLyozvjxmiPkWRXYHBeTY1wCyG
http://blog.csdn.net/frankiller/article/details/14228247