c memcpy函数

青衣

void *memcpy(void *dest, void *src, unsigned n);

string.h
返回值：dest*地址
功能：拷贝src n个字节到dest指向的内存

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define BUFFSIZE 1024
struct {
  char name[50];
  int age;
} zhangsan, wangsi;
int main() {
  char name[20] = "zhangsan";
  memcpy(zhangsan.name, name, strlen(name) + 1);
  zhangsan.age = 18;
  memcpy(&wangsi, &zhangsan, sizeof(zhangsan));
  printf("wangsi.name:%s, wangsi.age:%d\n", wangsi.name, wangsi.age);
  return 0;
}