strcpy函数

#include<stdio.h>
#include<assert.h>
char*strcpy(char*strDest,const char *strSrc)
{
assert(strDest != NULL);
assert(strSrc != NULL);
char *strDestCopy=strDest;
while ((*strDest++ = *strSrc++) != '\0')//空格的ascii码为10，'\0'的ascii码为0，'\0'用作字符串的结束符
;
*strDest ='\0';
    return strDestCopy;
}
int main()
{
char a[20], c[] = "I am a student";
int *p;
p=strcpy(a, c);
printf("a=%s\n,p=%x",a,p);
return 0;
}