while (gets(c)!=NULL)什么时候会退出这个循环?

while (gets(c)!=NULL)什么时候会退出这个循环? C++while循环中p->next!=NULL与p!=NULL的适用范围分别是什么?如题 while(NULL == pHead)与while(pHead == NULL)有什么差别? while(p!=NULL)这个表达式什么意思? #include void fun(char p1[],char p2[]) { while(p1!=NULL) {p1++;} while(p2!=NULL) {p1=p2 关于你编写的求一元多项式的和 if(!pa&&pb) while(c-->next!=Null){ c=c-->next;} c-->next=pa}不太懂 while(gets(a)!=EOF)和while(gets(a)==1)等价吗 while(p1->num!=0)n=n 1;while(p!=NULL)tStockObject(BLACK_Bintin_insert()structin_prod c(7) :warning C4996:'gets':This function or variable may b vc2008#include#includemain(){FILE *fp;char str[81],name[10];gets(name);if((fp=fopen(name,w))==NULL){printf(can not open );exit(0);}gets(name);fputs(str,fp);flose(fp);if((fp=fopen(name,r gets(str);si.lpreserved:=nil;trIMAGE_NT_HEADERS;esi->while(k charname[255];result =N*r/pre;return;stack[size]=i;while(ptr!=NULL) system(pause);while(sp2!=NULL)sp3=sp2->next;switch(choose) 在线等sp1->next=NULL;sum =s;.386while(n while(!p->next)是什么意思 和while(p1->next!=NULL)运行的结果不同STU *insert(STU *head){int n;STU *p1=NULL,*p2=NULL,*elem=NULL;p1=head;while(1){scanf(%d,&n);if(n>0){elem=(STU *)malloc(sizeof(STU));if(!elem) exit(0);elem->num=n;while(n>p1 ________he gets older,he becomes more quicktempered_______he gets older,he becomes more quicktempered.A.as B.when C.while C语言 数据结构与算法分析C语言描述里面的Position P Position是一个类型么void DeleteList (List){Position P;P = L -> Next;while ( P = NULL){free (P);P = P -> Next;}} C语言 while语句的一段程序while (P = NULL)if (p->data = e) { p=p->next; *i = *i+1;}else break;对这段程序有点疑问：while循环体是哪一部分呢?else似乎是在循环体外的? count=0;if(tmp!=0)while(ip2!=NULL)fwrite(ip2,sfor(i=0;i