MyStrcpy函数?

Question

我写了一个MyStrcpy函数,具体如下:#include <iostream> using namespace std;void MyStrcpy(char *s2, char *s1){while(*s1){*s2 = *s1;s2++;s1++;}*s2 = '\0';}int main() { char s1[] = "12345678";char s2[8] ={0};MyStrcpy(s2, s1);cout << s2 << endl;return 0;}但是如果改成#include <iostream> using namespace std;int main() { char s1[] = "12345678";char s2[8] ={0};while(*s1){*s2 = *s1;s2++;s1++;}*s2 = '\0';cout << s2 << endl;return 0;}会报错:错误为error C2105: '++' needs l-value当然s2输出也不对,求教原因.

Answer 1

char s1[] = "12345678";说明 s1是数组名， 数组名是常量， 不能够进行后面的s1++这种自增操作的， 如果想的话， 可以
char* temp = s1;

然后

while(*temp)
{
*s2 = *temp;
s2++;
temp++;
}