二维码门禁刷卡人脸识别梯控上位机软件部分

进出口控制代码，使用C语言编写：<br><br>```c<br>#include <stdio.h><br><br>int main()<br>{<br>    int in = 0, out = 0;<br>    int option;<br><br>    while(1)<br>    {<br>        printf("Enter 1 for entrance, 2 for exit, or 0 to quit: ");<br>        scanf("%d", &option);<br><br>        if(option == 0)<br>        {<br>            printf("Program terminated.\n");<br>            break;<br>        }<br>        else if(option == 1)<br>        {<br>            in++;<br>            printf("Entrance successful. Current number of people inside: %d\n", in);<br> &nb