strtok_s()函数在c和c++下的编译问题

[北言栾生]

如下这段代码，放在一个.c文件中，Windows下用gcc编译可以通过，但放在一个.cpp文件中Windows下用g++编译报错：error: 'strtok_s' was not declared in this scope

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

char string[] =".A string\tof ,,tokens\nand some  more tokens";
char seps[] = " .,\t\n";
char* token = NULL;
char* next_token = NULL;

int main(void)
{
   printf("Tokens:\n");

   // Establish string and get the first token:
   token = strtok_s(string, seps, &next_token);

   // While there are tokens in "string1" or "string2"
   while (token != NULL)
   {
       // Get next token:
       if (token != NULL)
       {
           printf(" %s\n", token);
           token = strtok_s(NULL, seps, &next_token);
       }
   }
   printf("the rest token1:\n");
   printf("%d", token);
}

请问这是为什么？

[赵4老师]

char *strtok_s(char *restrict str, rsize_t *restrict strmax, const char *restrict delim, char **restrict ptr); (2) (since C11)

[自信男孩]

用strtok_r试试，这个在c和c++中应该时都能用的～