Avoid strcpy(char* s,char* t){
while((*s = *t)!= '\0')
s++,t++;
}
Bvoid strcpy(char* s,char* t)
int i=0;
while((s[i] = t[i]) != '\0')
i++;
}
Cvoid strcpy(char* s,char* t){
while((*s++ = *t++) != '\0')；
}
Dvoid strcpy(char* s,char* t){
while(*s++ = *t++)；
}