struct.c

linux下网络编程的函数

#include <stdio.h>
#include <string.h>
#include <stdlib.h>

typedef struct BIO
{
char name[16];
unsigned age;
}BIO;

BIO *CreateBio(const char *name, unsigned age);

int main(void)
{
BIO exfriend;
BIO *friend;

friend = CreateBio("Sarah",16);
if(friend != NULL)
printf("My friend's name is %s\n"
"and my friend's age is %u\n",
friend->name,friend->age);
else puts("Failed to create Bio");
if(friend != NULL)
{
exfriend = *friend;
printf("\nMy former friend's name is %s\n"
"and my former friend's age is %u\n",
exfriend.name, exfriend.age);
}
free(friend);
return 0;
}

BIO *CreateBio(const char *name, unsigned age)
{
BIO *tmp = malloc(sizeof *tmp);

if(tmp != NULL)
{
unsigned i = sizeof(tmp->name);
tmp->age = age;
strncpy(tmp->name,name,i);
tmp->name[i-1] = '\0';
}
return tmp;
}