c和c++字符串分割

１、c++版本，第一个参数为待分割的字符串　，　第二个参数为分割字符串

std::vector<std::string> split(const std::string& s, const std::string& delim)

{

std::vector<std::string> elems;

size_t pos = 0;

size_t len = s.length();

size_t delim_len = delim.length();

if (delim_len == 0) return elems;

while (pos < len)

{

int find_pos = s.find(delim, pos);

if (find_pos < 0)

{

elems.push_back(s.substr(pos, len - pos));

break;

}

elems.push_back(s.substr(pos, find_pos - pos));

pos = find_pos + delim_len;

}

return elems;

}

 

２、ｃ语言版本

char *line = "0.5|0.6";

char seg[] = "|";

char *substr = strtok(line, seg);

float a;

while (substr != NULL)

{

a = atof(substr);

substr = strtok(NULL, seg);

printf("%f" , a);

}