小编Yuk*_*awa的帖子

在C++中,我可以非常轻松地分配一个字符串数组(比如10个字符串):

string* arrayOfString = new string[10];

但我不知道如何在ANSI C中做到这一点.我试过:

char** arrayOfString = (*(char[1000])) malloc (sizeof (*(char[1000])));

但编译器(MinGW 3.4.5)一直说它是"语法错误".怎么做对了？谢谢.

这段代码导致分段错误:

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define SLIDINGWINDOW 5
#define SEGMENTSIZE 100

int main() {
    char** send_buffer = (char**) malloc (SLIDINGWINDOW);
    int i;
    for (i = 0; i<SLIDINGWINDOW; ++i) {
        send_buffer[i] = (char*) malloc (SEGMENTSIZE);

    }
    for (i = 0; i<SLIDINGWINDOW; ++i) {
        strcpy(send_buffer[i], "Hello, world");
        printf("%s\n", send_buffer[i]);
        fflush(NULL);
    }
}

奇怪的是,如果你把第二个循环的内容放到第一个循环中,它就可以了!

谁能明白为什么会这样？非常感谢!

此行导致错误"构造函数Vector(double [],double [])未定义":

Vector<trainingSet> set = new Vector<trainingSet>({1.0, 1.0}, {0.0, 0.0});

虽然类"trainingSet"确实有一个相应的构造函数:

public class trainingSet {
    public double [] pattern, result;
    public trainingSet(){}
    public trainingSet(double[] Pattern, double[] Result){
        pattern = Pattern;
        result = Result;
    }
}

任何的想法？

import groovy.beans.Bindable;
import groovy.swing.SwingBuilder
import java.awt.BorderLayout
import javax.swing.JFrame

@Bindable def people = [[name:"Mary", age:18],
             [name:"Tom", age:25]]

def swingBuilder = new SwingBuilder()
swingBuilder.edt {  // edt method makes sure UI is build on Event Dispatch Thread.
    lookAndFeel 'system'  // Simple change in look and feel.
    frame(  title: 'Display a table',
            size: [400,300],
            show: true,
            locationRelativeTo: null,
            defaultCloseOperation: JFrame.EXIT_ON_CLOSE)
        {
            menuBar() {
                menu(text: "File", mnemonic: 'F'){
                    menuItem(text: "Add",
                    actionPerformed: {
                        people << [name:"Harry", age:17]
                        println people
                    }
                )}
            }
            panel(layout: new BorderLayout()) …