下面程序的输出结果是____。
#include
int main(void)
{
int a = 10, b = 11, c = 0;
switch (a % 3)
{
     case 0: c++; break;
     case 1: c++;
    switch (b % 2)
    {
default: c++;
case 0: c++;
    }
}
printf("%d\n", c);
return 0;
}