当其他地方需要使用变量时，需要将变量定义在函数外，供其他函数使用

1.局部变量，仅本函数使用，如下的变量preseluseres：

submit_revisions()
{
    char *preseluser,preseluseres[30];  //定义字符变量preseluser，用来表示预选用户,其中变量preseluseres作为preseluser的跳板，直接引用preseluser，就会成为一个常量
                                        //定义字符串变量preseluseres，字符串长度为30
    char *preselusertwo,preselusertwoes[30]; 
                            
    preseluser=lr_paramarr_random("selectusers");    //使用lr_paramarr_random函数随机获取selectusers列表中任意一项作为字符变量preseluser的值
    preselusertwo = lr_paramarr_random("selectusers");   //随机获取selectusers列表中任意一项作为字符串变量preselusertwo的值
    lr_output_message("preseluser=%s",preseluser);   //打印preseluser的值
    lr_output_message("preselusertwo=%s",preselusertwo);   //打印preselusertwo的值
    
    while(1)
    {
        if(preselusertwo==preseluser)
        {
            preselusertwo = lr_paramarr_random("selectusers");  //重新随机获取值
            lr_output_message("preselusertwo=%s",preselusertwo);   //打印preselusertwo的值
        }
        else
            break;  //否则退出循环
    }
    
    
    sprintf(preseluseres,"Value=%s",preseluser);  //使用sprintf函数，将"Value=%s"作为变量preseluseres的值
    lr_output_message("preseluseres=%s",preseluseres);   //打印preseluseres的值，验证preseluseres值是否正确，真正运行时可以把此行注释掉

    web_submit_data("add", 
        "Action=http://192.168.1.102:8000/reversion/revision/add/", 
        "Method=POST", 
        "EncType=multipart/form-data", 
        "RecContentType=text/html", 
        "Referer=http://192.168.1.102:8000/reversion/revision/add/", 
        "Snapshot=t6.inf", 
        "Mode=HTML", 
        ITEMDATA, 
        "Name=csrfmiddlewaretoken", "Value={addrevisionscsrfmiddlewaretoken}", ENDITEM, 
        "Name=csrfmiddlewaretoken", "Value={addrevisionscsrfmiddlewaretoken}", ENDITEM, 
        "Name=date_created_0", "Value={DateParame}", ENDITEM, 
        "Name=date_created_1", "Value={HourMinParam}", ENDITEM, 
        "Name=user", preseluseres, ENDITEM,    //引用preseluseres的值
        "Name=comment", "Value=123", ENDITEM, 
        "Name=version_set-TOTAL_FORMS", "Value=0", ENDITEM, 
        "Name=version_set-INITIAL_FORMS", "Value=0", ENDITEM, 
        "Name=version_set-MIN_NUM_FORMS", "Value=0", ENDITEM, 
        "Name=version_set-MAX_NUM_FORMS", "Value=1000", ENDITEM, 
        "Name=version_set-__prefix__-revision", "Value=", ENDITEM, 
        "Name=version_set-__prefix__-object_id", "Value=", ENDITEM, 
        "Name=version_set-__prefix__-content_type", "Value=", ENDITEM, 
        "Name=version_set-__prefix__-db", "Value=", ENDITEM, 
        "Name=version_set-__prefix__-format", "Value=", ENDITEM, 
        "Name=version_set-__prefix__-serialized_data", "Value=", ENDITEM, 
        "Name=version_set-__prefix__-object_repr", "Value=", ENDITEM, 
        "Name=version_set-__prefix__-id", "Value=", ENDITEM, 
        "Name=_save", "Value=", ENDITEM, 
        EXTRARES, 
        "Url=/static/xadmin/vendor/font-awesome/fonts/fontawesome-webfont.eot?", "Referer=http://192.168.1.102:8000/reversion/revision/", ENDITEM, 
        LAST);

    return 0;
}

2.其他地方也需要使用时，如下变量preseluseres，之后其他函数中也可以使用变量preseluseres：

char preseluseres[30];

submit_revisions()
{
    char *preseluser;  //定义字符变量preseluser，用来表示预选用户,其中变量preseluseres作为preseluser的跳板，直接引用preseluser，就会成为一个常量
                                        //定义字符串变量preseluseres，字符串长度为30
    char *preselusertwo,preselusertwoes[30]; 
                            
    preseluser=lr_paramarr_random("selectusers");    //使用lr_paramarr_random函数随机获取selectusers列表中任意一项作为字符变量preseluser的值
    preselusertwo = lr_paramarr_random("selectusers");   //随机获取selectusers列表中任意一项作为字符串变量preselusertwo的值
    lr_output_message("preseluser=%s",preseluser);   //打印preseluser的值
    lr_output_message("preselusertwo=%s",preselusertwo);   //打印preselusertwo的值
    
    while(1)
    {
        if(preselusertwo==preseluser)
        {
            preselusertwo = lr_paramarr_random("selectusers");  //重新随机获取值
            lr_output_message("preselusertwo=%s",preselusertwo);   //打印preselusertwo的值
        }
        else
            break;  //否则退出循环
    }
    
    
    sprintf(preseluseres,"Value=%s",preseluser);  //使用sprintf函数，将"Value=%s"作为变量preseluseres的值
    lr_output_message("preseluseres=%s",preseluseres);   //打印preseluseres的值，验证preseluseres值是否正确，真正运行时可以把此行注释掉

    web_submit_data("add", 
        "Action=http://192.168.1.102:8000/reversion/revision/add/", 
        "Method=POST", 
        "EncType=multipart/form-data", 
        "RecContentType=text/html", 
        "Referer=http://192.168.1.102:8000/reversion/revision/add/", 
        "Snapshot=t6.inf", 
        "Mode=HTML", 
        ITEMDATA, 
        "Name=csrfmiddlewaretoken", "Value={addrevisionscsrfmiddlewaretoken}", ENDITEM, 
        "Name=csrfmiddlewaretoken", "Value={addrevisionscsrfmiddlewaretoken}", ENDITEM, 
        "Name=date_created_0", "Value={DateParame}", ENDITEM, 
        "Name=date_created_1", "Value={HourMinParam}", ENDITEM, 
        "Name=user", preseluseres, ENDITEM,    //引用preseluseres的值
        "Name=comment", "Value=123", ENDITEM, 
        "Name=version_set-TOTAL_FORMS", "Value=0", ENDITEM, 
        "Name=version_set-INITIAL_FORMS", "Value=0", ENDITEM, 
        "Name=version_set-MIN_NUM_FORMS", "Value=0", ENDITEM, 
        "Name=version_set-MAX_NUM_FORMS", "Value=1000", ENDITEM, 
        "Name=version_set-__prefix__-revision", "Value=", ENDITEM, 
        "Name=version_set-__prefix__-object_id", "Value=", ENDITEM, 
        "Name=version_set-__prefix__-content_type", "Value=", ENDITEM, 
        "Name=version_set-__prefix__-db", "Value=", ENDITEM, 
        "Name=version_set-__prefix__-format", "Value=", ENDITEM, 
        "Name=version_set-__prefix__-serialized_data", "Value=", ENDITEM, 
        "Name=version_set-__prefix__-object_repr", "Value=", ENDITEM, 
        "Name=version_set-__prefix__-id", "Value=", ENDITEM, 
        "Name=_save", "Value=", ENDITEM, 
        EXTRARES, 
        "Url=/static/xadmin/vendor/font-awesome/fonts/fontawesome-webfont.eot?", "Referer=http://192.168.1.102:8000/reversion/revision/", ENDITEM, 
        LAST);

    return 0;
}