C++中替换特定字符串。删除特定字符串

int string_replase(string &s1, const string &s2, const string &s3)  
{  
    string::size_type pos = 0;  
    string::size_type a = s2.size();  
    string::size_type b = s3.size();  
    while ((pos = s1.find(s2,pos)) != string::npos)  
    {  
        s1.replace(pos, a, s3);  
        pos += b;  
    }  
    return 0;  
}  
string s2 = "###ip##";  
string s1 = "http://123###ip##678.com";  
string s3 = "192";    
string_replase(s1, s2, s3);  


//第二种替换字符串的方法用erase()和insert()

void string_replace_2(string&s1,const string&s2,const string&s3)
{
    string::size_type pos=0;
    string::size_type a=s2.size();
    string::size_type b=s3.size();
    while((pos=s1.find(s2,pos))!=string::npos)
    {
        s1.erase(pos,a);
        s1.insert(pos,s3);
        pos+=b;
    }
}

注：本文为转载，原地址http://blog.csdn.net/u011327981/article/details/51287433