小编iam*_*ice的帖子

我从Java Swing中搜索如何使用Item Combobox发现了这个JDateChooser.你知道如何安装吗？

这是链接JDateChooser

我找不到任何关于如何安装它的说明..

你可以分享一些如何安装它的说明...在此先感谢v (^_^) v

我们被要求创建一个Java多人游戏,但我仍然不知道像我这样的Java初学者最简单的多人游戏是什么.

任何建议都会有所帮助.提前致谢 :)

我正在尝试在我的代码中应用malloc,但仍然有问题,有一个错误说:"请求成员'id'在非结构或联合的东西中".

我想要做的是使用malloc而不是数组..并将结构存储在每个索引中,我尝试了array [i] - > id,但是我的文本文件中存储了一堆垃圾字符.我也增加了我并没有使用循环,因为用户可能只输入一次...这是我的代码:

#include<stdio.h>
#include<stdlib.h>
struct studentinfo{
       char id[8];
       char name[30];
       char course[5];
}s1;
main(){
    int i=0;
    FILE *stream = NULL;
    stream = fopen("studentinfo.txt", "a+");    
    struct studentinfo *array[50];

    array[i] = (struct studentinfo*) malloc(sizeof(struct studentinfo));
       printf("Enter Student ID: ");
       scanf("%s", array[i].id);
       fflush(stdin);
       printf("Enter Student Name: ");
       gets(array[i].name);
       fflush(stdin);
       printf("Enter Student Course: ");
       scanf("%s", array[i].course);

       fprintf(stream, "\n%s,\t%s,\t%s", array[i].id, array[i].name, array[i].course);
       i++;
       fclose(stream);
       free(array);
    getch();
}

希望你能帮助我...在此先感谢:)

我一直在收到错误消息mysql_num_rows(),你能帮我弄清楚我的代码出了什么问题吗？

这是我的代码:

<?php 
//check if the user press submit
if (isset($_POST['submit'] )) {

    $customer = preg_replace('#[^A-Za-z0-9]#i', '', $_POST["username"]); // filter everything but numbers and letters
    $password = preg_replace('#[^A-Za-z0-9]#i', '', $_POST["password"]); // filter everything but numbers and letters

    $sql = mysql_query("SELECT id FROM members WHERE username='$customer' AND password='$password' LIMIT 1"); // query the person
    // ------- MAKE SURE PERSON EXISTS IN DATABASE ---------
    $existCount = mysql_num_rows($sql); // count the row nums
    if ($existCount == 1) { // evaluate the …

我是新来的...但仍然在语法上遇到麻烦,希望你能帮助我...因为我坚持这个代码

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

int main(void){
     FILE *stream = NULL;
     stream = fopen("studentinfo.txt", "a+");
     /*some of initialization were used for testing purposes only*/

     char arr[5];
     char arr2[5];
     int i;
     char name[3];
     char course[5];

     printf("enter details: ");
     scanf("%s", arr2);

     while(!feof(stream)){ 
        fgets(arr, 100, stream);//i am confused if the line capture was stored at arr[0]
        if(strcmp(arr, arr2)==0){//i want to compare
           printf("success");//testing
        }
        printf("%s", arr);//i wonder does fgets just overwrites the new line to arr[0]
     }

     fclose(stream);

     getch();
}

多谢你们...

你可以帮我弄清楚我的代码中的问题..我想编辑一个特定的行.... thnx

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

int main (){
    char arr[50];
    char arr2[50];
    char arr3[50];     
    FILE *stream = NULL;
    FILE *stream2 = NULL;
    stream = fopen("studentinfo.txt", "rt");
    stream2 = fopen("studentinfo2.txt", "w+");
    char* token;
    char dlm[] = ",";

    printf("Enter student id: ");
    scanf("%s", arr2);
    printf("New student id: ");
    scanf("%s", arr3);
    while(!feof(stream)){
       fgets(arr,100,stream);
       fprintf(stream2,"%s",arr);
       token = strtok(arr,dlm);
       if(strcmp(arr2, token)==0){
       fseek ( stream2 , 0 , SEEK_CUR );
       fputs ( arr3 , stream2 );
       }
    }
    fclose ( stream2 );
    fclose ( stream ); …