while(no_of_nodes>0)
{
    if(no_of_nodes>=1)
    {

if子句是多余的，因为如果no_of_nodes小于1，则循环将无法继续.

另外，创建节点时，应将其初始化，以使p->next为NULL.仅当在链中添加下一个节点时，才应将新节点的地址设置为p->next

The if clause is redundant as the loop cannot continue if no_of_nodes is less than 1.

Also, when you create a node you should initialise it such that p->next is NULL. Only when you add the next node in the chain should you set the address of the new one into p->next