一道c面试题atol atoi isspace isdigit strcpy memcpy 的实现方法
Posted on: Friday, November 7th, 2008 in: cpp下载: src.cppvoid * my_memcpy(void* mem_des,const void* mem_src,size_t size)
{
assert(mem_des != NULL && mem_src != NULL);
void* addr = mem_des;
unsigned char *des,*src;
des = (unsigned char*)mem_des;
src = (unsigned char*)mem_src;
while(size– >0)
*des++ = *src++;
return addr;
}
char * my_strcpy(char* cpy,const char* src)
{
assert(cpy != NULL && src != NULL);
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