Strtok仅输出字符串的一部分

Question

#include <stdio.h>
#include <string.h>

int main(){
  char name[] = "eseumdesconhecidolheoferecerflores.issoeimpulse.cities";
  char *str;
  printf("%s\n", name)
  str = strtok(name, ".cities");
  printf("%s\n", str);
  return 0;
}

This is the output:

eseumdesconhecidolheoferecerflores.issoeimpulse.cities
umd

I have no idea what is happening at all. What I want is for the output of strtok to be a pointer to "eseumdesconhecidolheoferecerflores.issoeimpulse"

Answer 1

The delimiter argument to strtok is a string containing individual characters used to separate the string.

You specified delimiters . , c , i , t , e , and s .

So it's no surprise the output is umd for the first token, since it is surrounded by characters in your delimiter string.

If you want to find a whole string, you should use strstr instead.

For example:

char name[] = "eseumdesconhecidolheoferecerflores.issoeimpulse.cities";
char *pos;

pos = strstr(name, ".cities");
if (pos)
{
    *pos = '\0';
    printf("%s\n", name);
}