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<H1>结构体指针的指针的问题</H1>
<DIV class=author><A class=anchor name=Top>楼主</A>xiphias（var）<INPUT class=user1 title="一级用户 该版得分小于等于100分" type=button>2006-07-31
21:53:57 在 C/C++ / C语言 提问</DIV>
<P>#include <stdio.h> <BR> #include
<stdlib.h> <BR> #include <assert.h>
<BR> #include <string.h> <BR> <BR>
typedef struct tagTItem <BR> { <BR>
char Name[10]; <BR>
double Amt; <BR> } TItem; <BR>
<BR> void getmem(TItem** item) <BR> {
<BR> int i=0; <BR> item
= (TItem**)malloc(2*sizeof(TItem*)); <BR>
if (item==NULL) { printf("malloc e.\n");
return; } <BR> for (i=0;
i<2; i++) { <BR> *(item+i)
= (TItem*)malloc(sizeof(TItem)); <BR>
sprintf((*(item+i))->Name, "china%d", i+1);
<BR> (*(item+i))->Amt = (i+1)*12.0;
<BR> sprintf((*(item+i))->Name,
"china%d", i+1); <BR>
(*(item+i))->Amt = (i+1)*12.0; <BR>
} <BR> } <BR> <BR> int main(int
argc, char* argv[]) <BR> { <BR>
int i = 0, n = 0;
<BR> TItem **itm = NULL;
<BR> getmem(itm); <BR>
for(i=0; i<2; i++) { <BR>
printf("[%s]\n", (*itm++)->Name); <BR>
} <BR> free(itm); <BR>
getchar(); <BR> return 0;
<BR> } <BR> <BR> <BR> //
不知道哪里错了，打印的时候就core dump勒，帮忙看看，指针不会用啊 <SPAN>问题点数：20、回复次数：6</SPAN><A
href="http://topic.csdn.net/t/20060731/21/4917799.html#">Top</A> </P>
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src="结构体指针的指针的问题 C-C++ - C语言 - CSDN社区 community_csdn_net.files/Board.htm"
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<H3><STRONG><A class=anchor name=r_35893378>1 楼</A>ddstudent（）<INPUT class=user2 title="二级用户 该版得分小于等于500分，大于100分" type=button></STRONG><SPAN>回复于
2006-07-31 22:11:53 得分 <EM>5</EM></SPAN></H3>
<P>#include <stdio.h> <BR> #include
<stdlib.h> <BR> #include <assert.h>
<BR> #include <string.h> <BR> <BR>
typedef struct tagTItem <BR> { <BR>
char Name[10]; <BR>
double Amt; <BR> } TItem; <BR>
<BR> void getmem(TItem** item) <BR> {
<BR> int i=0; <BR> for
(i=0; i<2; i++) <BR> {
<BR> *(item+i) =
(TItem*)malloc(sizeof(TItem)); <BR>
sprintf((*(item+i))->Name, "china%d", i+1); <BR>
(*(item+i))->Amt = (i+1)*12.0;
<BR> // sprintf((*(item+i))->Name,
"china%d", i+1); // 重复
<BR> // (*(item+i))->Amt =
(i+1)*12.0;
// 重复 <BR>
} <BR> } <BR> <BR> int
main(int argc, char* argv[]) <BR> {
<BR> int i = 0, n
= 0; <BR> TItem **itm =
NULL; <BR> // 程序最主要错在把
itm = malloc 放在函数里, 函数结束返回时並不会传回來 <BR>
// itm 还是 NULL, 如果要在函数里改 itm
的值, 要传 &itm <BR> itm
= (TItem**)malloc(2*sizeof(TItem*)); <BR>
if (itm==NULL) <BR> {
<BR> printf("malloc e.\n");
<BR> return 0; <BR>
} <BR> getmem(itm); <BR>
for(i=0; i<2; i++) { <BR>
printf("[%s]\n", (*(itm+i))->Name);
// itm+i <BR>
} <BR> free(itm); <BR>
getchar(); <BR> return 0;
<BR> } <BR> <A
href="http://topic.csdn.net/t/20060731/21/4917799.html#">Top</A></P>
<H3><STRONG><A class=anchor name=r_35893430>2 楼</A>jixingzhong（瞌睡虫·星辰）<INPUT class=star4 title="四星用户 该版得分小于等于100000分，大于50000分" type=button></STRONG><SPAN>回复于
2006-07-31 22:17:13 得分 <EM>10</EM></SPAN></H3>
<P>void getmem(TItem** item) <BR> { <BR>
int i=0; <BR> *item =
(TItem*)malloc(2*sizeof(TItem)); <BR> if
(item==NULL) { printf("malloc e.\n"); return;
} <BR> for (i=0; i<2;
i++) <BR> { <BR>
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