以下是一个示例的C语言代码,可以随机选择并输出15个龙年拜年祝福:

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

void shuffle(char *array[], int size) {
    if (size > 1) {
        int i;
        for (i = 0; i < size - 1; i++) {
            int j = i + rand() / (RAND_MAX / (size - i) + 1);
            char *temp = array[j];
            array[j] = array[i];
            array[i] = temp;
        }
    }
}

int main() {
    srand(time(NULL));

    char *greetings[] = {
        "龙年到,吉祥到,合家欢笑闹龙舞。",
        "龙祥吉,龙年到,好运连连走一遭。",
        "红灯高挂,福到根到。",
        "龙腾虎跃,福气踏步。",
        "祝你龙马精神,龙年大吉。",
        "龙年到,好运到,吉祥如意伴你走。",
        "龙年行大运,事事顺心愿。",
        "龙年吉祥到,快乐福满堂。",
        "龙年福满门,好运与你结缘。",
        "龙年到来,好运连连不断。",
        "龙马精神迎新年,美梦如烟成愿还。",
        "龙年到了,愿你财源广进。",
        "福到了,好运来,健康快乐绕身旁。",
        "新年好,龙年到,心想事成乐无边。",
        "辞旧迎新,龙年快乐。",
        "龙年到,好运到,幸福笑容堆满脸。"
    };

    int size = sizeof(greetings) / sizeof(greetings[0]);

    shuffle(greetings, size);

    for (int i = 0; i < 15; i++) {
        printf("祝福%d: %s\n", i+1, greetings[i]);
    }

    return 0;
}


运行此C语言代码将输出15条随机选择的龙年拜年祝福。每次运行结果都可能不同,祝您龙年快乐!