C语言切换壁纸和播放音乐

#include <stdio.h>
#include <Windows.h>
#pragma  warning(disable:4996)  //排除VS造成的错误

int main()
{
	int i;
	//Sleep(1000);
	printf("The program is running...\n");
	printf("Please wait...\n");
	for (i = 0; i < 100; i++)
	{
		/*if (i==0)
		{
			Sleep(1000);
		}*/

		char str[100] = { 0 };
		sprintf(str, "E:\\Temp\\testBackground\\%d.jpg", i % 11);
		SystemParametersInfoA(20, 0, str, 3);

		char str1[100] = { 0 };
		sprintf(str1, "E:\\Temp\\testBackground\\%d.mp3", i % 4);
		ShellExecuteA(NULL, "open", str1, 0, 0, SW_NORMAL);
		
		if (i==0)
		{
			Sleep(1000);
		}
		else
		{
			Sleep(100000);//休眠100秒
		}
		
	}
	
	return 0;
}