C语言函数大全--w 开头的函数（2）

#include <wchar.h>
#include <stdio.h>

int main() {
    wchar_t str[] = L"Hello, huazie! This is wcstok demo.";
    wchar_t* token;

    // 第一次调用
    token = wcstok(str, L" ,.!?");
    while (token != NULL) 
    {
        wprintf(L"%ls\n", token);
        token = wcstok(NULL, L" ,.!?");
    }

    return 0;
}

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

int main() 
{
    //const wchar_t* str = L"123456";
    //const wchar_t* str = L"123a456";
    //const wchar_t* str = L"a123456";
    const wchar_t* str = L"0xFF";
    wchar_t* endptr;
    long int num;

    //num = wcstol(str, &endptr, 10);
    num = wcstol(str, &endptr, 0);
    if (endptr == str)
        printf("Invalid input.\n");
    else
        printf("The number is %ld\n", num);

    return 0;
}

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

int main() 
{
    const wchar_t* str = L"123a456";
    wchar_t* endptr;
    unsigned long int num;

    num = wcstoul(str, &endptr, 10);
    if (endptr == str)
        printf("Invalid input.\n");
    else
        printf("The number is %lu\n", num);

    return 0;
}

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

#define ARRAY_SIZE 5

int main() 
{
    const wchar_t* arr[ARRAY_SIZE] = { L"Tom", L"Alice", L"Huazie", L"David", L"Charlie" };
    wchar_t sorted_arr[ARRAY_SIZE][50];
    size_t i;

    for (i = 0; i < ARRAY_SIZE; i++) 
    {
        wcsxfrm(sorted_arr[i], arr[i], sizeof(sorted_arr[i]));
    }

    // 使用 qsort 对字符串数组排序
    qsort(sorted_arr, ARRAY_SIZE, sizeof(sorted_arr[0]), wcscmp);

    // 排序后输出
    wprintf(L"Sorted array:\n");
    for (i = 0; i < ARRAY_SIZE; i++) 
    {
        wprintf(L"%ls\n", sorted_arr[i]);
    }

    return 0;
}

#include <stdio.h>
#include <wchar.h>
#include <wctype.h>

int main() 
{
    wchar_t ch = L',';
    wctype_t punct_wt;

    // 获取标点符号字符类型
    punct_wt = wctype("punct");

    // 判断指定的宽字符是否为标点符号
    if (iswctype(ch, punct_wt)) {
        wprintf(L"%lc is a punctuation character.\n", ch);
    } else {
        wprintf(L"%lc is not a punctuation character.\n", ch);
    }

    return 0;
}

#include <stdio.h>
#include <wchar.h>

int main() 
{
    wchar_t ch = L'?';
    int byte;

    // 将 Unicode 字符转换为字节表示
    byte = wctob(ch);

    // 输出字节值
    printf("Byte value of %lc: %d (0x%02X)\n", ch, byte, byte);

    return 0;
}

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

int main() 
{
    wchar_t ch = L'?';
    char mb[MB_CUR_MAX];
    int len;

    // 将 Unicode 字符转换为多字节字符表示
    len = wctomb(mb, ch);

    // 输出转换结果
    if (len >= 0) 
    {
        printf("Multibyte representation of %lc: ", ch);
        for (int i = 0; i < len; i++) {
            printf("%02X ", (unsigned char) mb[i]);
        }
        printf("\n");
    } 
    else 
    {
        printf("Failed to convert %lc to multibyte character.\n", ch);
    }

    return 0;
}

#include <stdio.h>
#include <wchar.h>

int main() 
{
    const wchar_t str[] = L"Hello, Huazie!";
    const wchar_t ch = L'u';
    wchar_t* pch;

    // 在宽字符数组中查找给定的宽字符
    // 使用 wcslen() 函数来获取 str 的长度，以指定要搜索的字节数 n
    pch = wmemchr(str, ch, wcslen(str));

    // 根据 pch，来判断是否找到，并输出结果
    if (pch)
        wprintf(L"Found '%lc' at position %d.\n", ch, (int)(pch - str));
    else
        wprintf(L"Could not find '%lc'.\n", ch);

    return 0;
}

#include <stdio.h>
#include <wchar.h>

int main() 
{
    const wchar_t str1[] = L"Hello";
    const wchar_t str2[] = L"Huazie";
    int result;

    // 比较两个宽字符数组
    result = wmemcmp(str1, str2, wcslen(str1));

    // 根据result，来判断，并输出结果
    if (result == 0)
        wprintf(L"%ls and %ls are equal.\n", str1, str2);
    else if (result < 0)
        wprintf(L"%ls is less than %ls.\n", str1, str2);
    else
        wprintf(L"%ls is greater than %ls.\n", str1, str2);

    return 0;
}

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

int main() 
{
    const wchar_t src[] = L"Hello, Huazie!";
    wchar_t dest[20];

    // 将一个宽字符数组复制到另一个宽字符数组
    wmemcpy(dest, src, wcslen(src) + 1);

    // 输出结果
    wprintf(L"Source string: %ls\n", src);
    wprintf(L"Destination string: %ls\n", dest);

    return 0;
}

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

int main() 
{
    wchar_t str[20]= L"Hello Huazie!";

    // 修改前
    wprintf(L"Before: %ls\n", str);

    // 将一个宽字符数组的所有元素设置为给定的宽字符值X
    wmemset(str, L'X', wcslen(str));

    // 修改后
    wprintf(L"After : %ls\n", str);

    return 0;
}

#include <stdio.h>
#include <wchar.h>

int main() 
{
    wchar_t name[] = L"Huazie";
    int age = 25;
    double height = 1.75;

    // 输出格式化的宽字符字符串
    wprintf(L"%ls %d %.2f\n", name, age, height);

    return 0;
}

#include <stdio.h>
#include <unistd.h>

int main() 
{
    const char msg[] = "Hello, Huazie!\n";
    int nbytes;

    // 向标准输出流写入数据
    nbytes = write(STDOUT_FILENO, msg, sizeof(msg) - 1);

    // 输出结果
    if (nbytes == -1) 
    {
        perror("write");
        return 1;
    }

    return 0;
}

#include <stdio.h>
#include <wchar.h>

int main() 
{
    wchar_t name[20];
    int age;

    // 从标准输入流读取格式化的宽字符输入
    wprintf(L"Please nput your name and age: ");
    wscanf(L"%ls %d", name, &age);

    // 输出结果
    wprintf(L"name: %ls age: %d\n", name, age);

    return 0;
}