c - strtok_r 导致 "assignment makes pointer from integer without a cast"

我试图在 C 中标记一个字符串并使用 strtok_r 将标记保存到多个变量中。据我所知，我完全按照文档使用它:

char *saveptr;

char *ticketuser = strtok_r(request, ":", &saveptr);
char *ticketservice = strtok_r(NULL, ":", &saveptr);
char *ticketkey = strtok_r(NULL, ":", &saveptr);
//And so on...

其中 'request' 是一串以冒号分隔的标记。当我尝试编译时，在我分配一个字符串的每一行上，我都会得到“赋值使指针从整数而不进行强制转换”。由于 strtok_r 应该返回一个 char*，我看不出问题是什么。

编辑:这是我的所有代码:

#include <stdio.h>

char *add( char *request ) {

  char *name = "add";
  char *secret = "secret1";
  char *failcode = "0:add:0";
  char returncode[80];
  char *saveptr;

  char *username = strtok_r(request, ":", &saveptr);
  char *servicename = strtok_r(NULL, ":", &saveptr);
  int parameter1 = atoi(strtok_r(NULL, ":", &saveptr));
  int parameter2 = atoi(strtok_r(NULL, ":", &saveptr));
  int ticketlead1 = atoi(strtok_r(NULL, ":", &saveptr));
  char *ticketuser = strtok_r(NULL, ":", &saveptr);
  char *ticketservice = strtok_r(NULL, ":", &saveptr);
  char *ticketkey = strtok_r(NULL, ":", &saveptr);

  //Catch any issues with the request
  if (strcmp(username,ticketuser) != 0){
    printf("username did not match ticket username\n");
    return failcode;
  }//if
  else if (strcmp(servicename,ticketservice) != 0){
    printf("service name did not match ticket service name\n");
    return failcode;
  }//else if
  else if (strcmp(secret,ticketkey) != 0){
    printf("secret key did not match ticket secret key\n");
    return failcode;
  }//else if

  //request was good, return value
  else{
    int val = parameter1 + parameter2;
    sprintf(returncode, "1:add:%d", val);
    return returncode;
  }//else

}//add


int main( int argc, char **argv ) {

  char *returned;
  char *req = "user:serv:5:8:1:user:serv:secret1";
  returned  = add(req);

  printf(returned);
  printf("\n");

  return 1;

}//main

最佳答案

答案在评论中找到:我在文件顶部丢失了 #include <string.h>。

编辑:我应该补充一点，除了上面提到的问题之外还有其他问题。首先，saveptr 应该被初始化为 null。其次，正如 BLUEPIXY 指出的，returncode[] 是一个局部变量。用 char *returncode = malloc ( . . . ); 替换了它的定义

关于c - strtok_r 导致 "assignment makes pointer from integer without a cast"，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/17015466/