本人小白，才接触 C++ 自己写的程序有问题求大侠们帮帮忙

#include<stdio.h>
#include<windows.h>
void A()
{    if(time.wHour==16);
    if(time.wMinute==15);
    if(time.wSecond==0);
        printf("************\n");
}
int main()
{   
        SYSTEMTIME time;                        
    SYSTEMTIME clock;                        
    GetLocalTime(&time);
    printf("学习C语言\n");
    printf("当前时间为：%2d:%2d:%2d\n",time.wHour,time.wMinute,time.wSecond);
    return 0;
}