代码如下：

#include<string.h>
#include<iostream>
#include<algorithm>
#include<cstdio>
using namespace std;
int a[2003] = {}, b[2003] = {}, cnt = 0;
char c[2003] = {}, d[2003] = {};
int* HighPlusHigh(int Atarget[], int Btarget[])
{
	int t[2003] = {};
	for (int temp = 1; Atarget[temp] != -1 ||Btarget[temp] != -1; temp++)
	{
		if(Atarget[temp]!=-1&&Btarget[temp]!=-1)t[temp] = t[temp] + Atarget[temp] + Btarget[temp];
		else if(Atarget[temp]==-1)t[temp] = t[temp] + Btarget[temp];
		else if (Btarget[temp] == -1)t[temp] = t[temp] + Atarget[temp];
		if (t[temp] >= 10)
		{
			t[temp + 1]++;
			t[temp] %= 10;
		}
		cnt++;
	}
	return t;
}
int main()
{
	int* p;
	memset(c, '\0', sizeof(c));
	memset(d, '\0', sizeof(d));
	memset(a, -1, sizeof(a));
	memset(b, -1, sizeof(b));
	scanf("%s", &c);
	scanf("%s", &d);
	int ctemp = 0, ct = strlen(c);
	int dtemp = 0, dt = strlen(d);
	for (; ctemp <= strlen(c); ctemp++, ct--)
		a[ctemp] = (int)(c[ct]) - 48;
	for (; dtemp <= strlen(d); dtemp++, dt--)
		b[dtemp] = (int)(d[dt]) - 48;
	p = HighPlusHigh(a, b);
	for (int i = cnt + 1; i; i--)
		if (i != cnt + 1 || *(p + i) != 0)printf("%d", *(p + i));
	return 0;
}

经过多次删代码测试提交之后我发现应该是这一行的问题

if (i != cnt + 1 || *(p + i) != 0)printf("%d", *(p + i));

不知道为什么会RE...有大佬可以解释一下吗orz