结构体指针连接

版本一：

 

#include <stdio.h> #include <stdlib.h> #include <memory.h> /*使用编译器默认对齐方式*/ typedef struct tagInfo { int iNum; char szName[10]; int iAge; }stINFO; stINFO gstMessage[] = { {10, "liming", 100}, {20, "zhangsan", 200}, {30, "jack", 300} }; stINFO gstSubMessage[] = { {50, "plato", 550}, {55, "socrates", 800} }; int main() { int iNum = 0; int i = 0; stINFO *pAll = NULL; int iSubNum = 0; iSubNum = sizeof(gstSubMessage) / sizeof(stINFO); iNum = sizeof(gstMessage) / sizeof(stINFO); pAll = (stINFO *)malloc((iNum + iSubNum) * sizeof(stINFO)); if (pAll == NULL) { printf("alloc memory failed!/n"); return 0; } memset(pAll, 0, (iNum + iSubNum) * sizeof(stINFO)); /*连接*/ memcpy(pAll, gstMessage, sizeof(gstMessage)); memcpy((pAll + iNum), gstSubMessage, sizeof(gstSubMessage)); for (i = 0; i < (iNum + iSubNum); i++) { printf("/nÐòºÅ:%d/tÐÕÃû:%s/tÄêÁä:%d/n", pAll[i].iNum, pAll[i].szName, pAll[i].iAge); } free(pAll); pAll = NULL; return 0; }

 

版本二：

#include <stdio.h> #include <stdlib.h> #include <memory.h> /*ʹÓñàÒëÆ÷ĬÈ϶ÔÆ뷽ʽ*/ typedef struct tagInfo { int iNum; char szName[10]; int iAge; }stINFO; static stINFO* GetAllMessage(stINFO *pFirstSub, int iFirstNum, stINFO *pSecondSub, int iSecondNum) { stINFO *pTemp = NULL; int iNum = iFirstNum + iSecondNum; pTemp = (stINFO *)malloc(iNum * sizeof(stINFO)); if (pTemp == NULL) { printf("alloc memory failed!/n"); return NULL; } memset(pTemp, 0, iNum * sizeof(stINFO)); memcpy(pTemp, pFirstSub, (iFirstNum * sizeof(stINFO))); memcpy((pTemp + iFirstNum), pSecondSub, (iSecondNum * sizeof(stINFO))); return pTemp; } int main() { int i = 0; stINFO gstMessage[] = { {10, "liming", 100}, {20, "zhangsan", 200}, {30, "jack", 300} }; stINFO gstSubMessage[] = { {50, "plato", 550}, {55, "socrates", 800} }; int iFirstNum = sizeof(gstMessage) / sizeof(stINFO); int iSecondNum = sizeof(gstSubMessage) / sizeof(stINFO); stINFO *pAll = GetAllMessage(gstMessage, iFirstNum, gstSubMessage, iSecondNum); if (pAll == NULL) { printf("pAll is Null ptr/n"); return 0; } for (i = 0; i < (iFirstNum + iSecondNum); i++) { printf("/nÐòºÅ:%d/tÐÕÃû:%s/tÄêÁä:%d/n", pAll[i].iNum, pAll[i].szName, pAll[i].iAge); } free(pAll); pAll = NULL; return 0; }