对于字符串，主要的操作时字符串替换和字符串分割，下面给出这几个函数

//简洁，不保留空串std::vector
     
       split_s(const char* src, const char* delim);//保留空串，防止参数错误std::vector
      
        split_x(const char* src, const char* delim);std::vector
       
         split_c(const char* src, char delim);//整体替换std::string replace_all_distint(const std::string& src, const std::string& old_str, const std::string& new_str);std::string replace_all_distint(const char* src, const char* old_s, const char* new_s);//所有的分别替换std::string replace_all_distint_char(const std::string& src, const std::string& old_str, char new_w);std::string replace_all_distint_char(const char* src, const char* old_s, char new_w);std::string replace_all_distint_char(const std::string& src, const std::string& old_str, char new_w);
       
      
     

上面是这些函数的声明，注意需要包含一些STL头文件 vector, string, sstream

下面的是具体实现

/*字符串分割函数参数：---src: 被分割的字符串---delim: 分隔符所组成的字符串功能：将被分割的字符串中所有的delim换成\0,进行分割，连在一起的当成一个例如：split_s("AAABBCCGGGBDDD", "GB") = {"AAA", "CC", "DDD"}*/std::vector
     
       split_s(const char* src, const char* delim){    std::vector
      
        vec;    if (NULL == src || NULL == delim)    {        return vec;    }    char* p;    char* source = new char[strlen(src) + 1];    strcpy(source, src);    p = strtok(source, delim);    while (p)    {        std::string str(p);        p = strtok(NULL, delim);        vec.push_back(str);    }    delete source;    return vec;}/*字符串分割按照给的分隔符，彻底分解字符串，分隔符如果紧挨在一起则中间中空串表示例如：split_x("AAABBCCGGGBDDD", "GB") = {"AAA", "", "CC", "", "", "", "DDD"}*/std::vector
       
         split_x(const char* src, const char* delim){    if (NULL == src || NULL == delim)    {        std::vector
        
          vec;        return vec;    }    std::string all = replace_all_distint_char(src, delim, delim[0]);    return split_c(all.c_str(), delim[0]);}/*按照某个字符分割字符串split_c("AAABBCCGGGBDDD", 'B') = {"AAA", "", "CC", "GGG", "DDD"}*/std::vector
         
           split_c(const char* src, char delim){    std::vector
          
            vec; if (NULL == src) { return vec; } stringstream is(src); string line; while(getline(is,line,delim)) { vec.push_back(line); } return vec;}/*将字符串替换，直到不在出现old_s，这个不常用如 replace_all("112211", "12", "21") => 121211 => 212111 => 221111*/std::string replace_all(char* src, const char* old_s, const char* new_s){ std::string source(src); std::string old_str(old_s); std::string new_str(new_s); while(true) { std::string::size_type pos(0); if ((pos = source.find(old_str)) != string::npos) { source.replace(pos,old_str.length(), new_str); } else { break; } } return source;}/*将所有old_str换成new_str*/std::string replace_all_distint(const std::string& src, const std::string& old_str, const std::string& new_str){ std::string source(src); for (std::string::size_type pos(0); pos != std::string::npos; pos+=new_str.length()) { if ((pos = source.find(old_str, pos)) != string::npos) { source.replace(pos, old_str.length(), new_str); } else { break; } } return source;}/*重载上面的函数*/std::string replace_all_distint(const char* src, const char* old_s, const char* new_s){ std::string source(src); std::string old_str(old_s); std::string new_str(new_s); return replace_all_distint(source, old_str, new_str);}/*将所有old_str中出现过的字符都替换为new_w*/std::string replace_all_distint_char(const std::string& src, const std::string& old_str, char new_w){ std::string source(src); for (int i = 0; i < source.length(); i++) { if (old_str.find(source[i], 0) != std::string::npos) { source[i] = new_w; } } return source;}/*重载上面的函数*/std::string replace_all_distint_char(const char* src, const char* old_s, char new_w){ std::string source(src); std::string old_str(old_s); return replace_all_distint_char(source, old_str, new_w);}