[觀點][C語言]switch case裡面沒有break的話，就會一直選到下面的case

#include <stdio.h>

int main()
{
    int id = 3; 
    int value;
    switch(id)
    {
        case 1:
            value = 1;
            break;

        case 2:
            value = 2;
            break;

        case 3:
            value = 3;

        default:
            value = 4;
    }

    printf("value = %d\n", value);   
    return 0;
}

[Answer] value = 4