Question

我正在尝试在C中对String进行标记，并使用strtok_r将标记保存到多个变量中。据我所知，我完全按照记录使用它：

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'是冒号分隔的标记字符串。当我尝试编译时，我在每个指定其中一个字符串的行上得到“赋值从整数而不是强制转换”。由于strtok_r应该返回char *，我看不出是什么问题。

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

Answer 1

在评论中找到答案：我在文件顶部缺少#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应初始化为null。其次，正如BLUEPIXY指出的那样，returncode[]是一个局部变量。用char *returncode = malloc ( . . . );

替换了它的定义

Answer 2

可以使用＆＃34; string.h＆＃34;删除它。 C中的头文件

strtok_r导致“赋值从没有强制转换的整数中生成指针”

2 个答案: