void Temp_function() { Uart_Printf("\nPlease input 1-16 to select test!!!\n"); }

struct {
    void (*fun)(void);
    char *tip;
}CmdTip[] = {
                { Temp_function, "Please input 1-16 to select test" } ,
                { BUZZER_PWM_Test, "Test PWM" } ,
                { RTC_Display, "RTC time display" } ,
                { Test_Adc, "Test ADC" } ,
                { KeyScan_Test, "Test interrupt and key scan" } ,
                { Test_Touchpanel, "Test Touchpanel" } ,
                { TFT_LCD_Test, "Test TFT-LCD or VGA1024x768 module" } ,
                { Test_Iic, "Test IIC EEPROM, if use QQ2440, please remove the LCD" } ,
                { PlayMusicTest, "UDA1341 play music" } ,
                { Test_SDI, "Test SD Card" } ,
                { Camera_Test, "Test CMOS Camera"},
                { 0, 0}                        
            };
    while(1)
    {
        U8 idx;
        
        Uart_Printf("\nPlease select function : \n");   
        for(i=0; CmdTip[i].fun!=0; i++)
            Uart_Printf("%d : %s\n", i, CmdTip[i].tip);
        idx = Uart_GetIntNum_GJ() ;   
        if(idx<i)
        {
            (*CmdTip[idx].fun)();
            Delay(20);
            Uart_Init( 0,115200 );
        }   
   
    }         

}
谁能总结下函数指针的用法？