大家寫完一個比較大的程式，然後讓它執行時，我們都知道 .c檔案在執行時是很快的，那麼就不能夠體現我們所寫的程式是很大很複雜的，那麼如何能提升這個檔案的逼格呢？這時就需要借用延遲函式以及幾條用來裝逼的英文。
請看：

int main()
{
    printf("\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n");
    printf("***********************Ready to enter***************************\n");
    sleep(0.5);
    printf("  loading date from database ...\n
 
");
    sleep(1);
    printf("  running environment is being detected ...\n");
    sleep(2);
    printf("  install backup resources, check for updates ...\n");
    sleep(0.5);
    printf("  start importing resources ...\n");
    sleep(1);
    printf("  importing successfully !\n");
    sleep(1);
    printf("  detect external memory status ...\n
 
");
    sleep(0.5);
    printf("  get ready !\n");
    sleep(1);
    printf("  entering ...\n");
    printf("    3...\n");
    sleep(1);
    printf("    2..\n");
    sleep(1); 
    printf("    1.\n");
    sleep(1);
    printf("\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n");    
    printf("~~
 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n");
    printf("~********************************************************************************~\n");
    printf("~  *      *      *  * * * *  *        * * *    * * *       *     *     * * * *   ~\n");
    printf("~  *      *      *  *        *       *       *       *    * *   * *    *         ~\n");
    printf("~   *     *     *   * * * *  *      *       *         *  *   * *   *   * * * *   ~\n");
    printf("~    *  *   *  *    *        *       *       *       *  *     *     *  *         ~\n");
    printf("~     *       *     * * * *  * * * *  * * *    * * *    *     *     *  * * * *   ~\n");
    printf("~********************************************************************************~\n");  
    printf("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n");
    sleep(3);
    printf("\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n");

程式會逐條延遲顯示，就像是正在開啟一個比較大的軟體一樣，用來裝逼在合適不過

下面是我手敲打的 WELCOME

printf("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n");
        printf("~*******************************Address List***********************************~\n");
        printf("~~~~~                                                                          ~\n");
        printf("~    *If you want to add a new member ,please enter '1'                        ~\n");                     
        printf("~      *If you want to query one number, please enter '2'                      ~\n");
        printf("~        *If you want to delete one number, please enter '3'                   ~\n");
        printf("~          *If you want to update information, please enter '4'                ~\n");
        printf("~            *If you want to print all the number, please enter '5'            ~\n");
        printf("~              *If you want to empty the address list, please enter '6'        ~\n");
        printf("~                *If you want to exit, please enter '0'                        ~\n");
        printf("~                                                                     ~~~Tengt ~\n");
        printf("~******************************************************************************~\n");  
        printf("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n");
        printf("~ *enter:     ");

前戲結束，最後你的程式閃亮登場

希望大家喜歡~