typedef struct _STSTAFFINFO
{
char *pName;
int iId; /*ID*/
}stStaffInfo;

char* GetStaffNameById(int iId)
{
int i;

static stStaffInfo stTmpInfo[] =
{
{"Socrates", 1},
{"dyx1024", 2},
{"Kevin", 3},
{"Jim", 4}
};

for (i = 0; i < sizeof(stTmpInfo) / sizeof(stTmpInfo[0]); i++)
{
if (stTmpInfo[i].iId == iId)
{
return stTmpInfo[i].pName;
}
}

return "No match Name";

}

int main(int argc, char *argv[])
{
int iId = 2;

char *pName = GetStaffNameById(iId);

printf("Staff Name is : %s(id = %d)\n", pName, iId);

system("PAUSE");

return 0;
}

3、修改接口，通过出参取回。

[cpp]
#include
#include

typedef struct _STSTAFFINFO
{
char *pName;
int iId;
}stStaffInfo;


void GetStaffNameById(int iId, int iNameLen, char *pOutName)
{
int i;

stStaffInfo stTmpInfo[] =
{
{"Socrates", 1},
{"dyx1024", 2},
{"Kevin", 3},
{"Jim", 4}
};

if (NULL == pOutName)
{
return;
}

for (i = 0; i < sizeof(stTmpInfo) / sizeof(stTmpInfo[0]); i++)
{
if (stTmpInfo[i].iId == iId)
{
strncpy(pOutName, stTmpInfo[i].pName, iNameLen);
return;
}
}

strncpy(pOutName, "No match Name", iNameLen);

return;

}

int main(int argc, char *argv[])
{
int iId = 20;
char szName[21] = "\0";

GetStaffNameById(iId, 20, szName);

printf("Staff Name is : %s(id = %d)\n", szName, iId);

system("PAUSE");

return 0;
}
#include
#include

typedef struct _STSTAFFINFO
{
char *pName;
int iId;
}stStaffInfo;

void GetStaffNameById(int iId, int iNameLen, char *pOutName)
{
int i;

stStaffInfo stTmpInfo[] =
{
{"Socrates", 1},
{"dyx1024", 2},
{"Kevin", 3},
{"Jim", 4}
};

if (NULL == pOutName)
{
return;
}

for (i = 0; i < sizeof(stTmpInfo) / sizeof(stTmpInfo[0]); i++)
{
if (stTmpInfo[i].iId == iId)
{
strncpy(pOutName, stTmpInfo[i].pName, iNameLen);
return;
}
}

strncpy(pOutName, "No match Name", iNameLen);

return;

}

int main(int argc, char *argv[])
{
int iId = 20;
char szName[21] = "\0";

GetStaffNameById(iId, 20, szName);

printf("Staff Name is : %s(id = %d)\n", szName, iId);

system("PAUSE");

return 0;
}

4、通过子程序分配内存，调用者释放解决。