求解释一下该代码什么意思

if(n%2==0)
{ pEstn/2;
while(s!=p)
¡push seqstack(STK,*s);
stt:
//判断是否是回文
else
{p=s+(n+1)/2;
while(s!=p-1)
{ push seqstack(STK,*s);
stt:
whiles
w