版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/SSLGZ_yyc/article/details/83445850
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程序：
#include<iostream>
#include<cstdio>
#include<cstring>
using namespace std;
long long s1=0,s2=0,s3=0;
int bz=0;
char x;
int main()
{
while (cin>>x)
{
if (x=='+')
{
bz=1;
continue;
}
if (bz==0) s1=s1*10+(x-'0');
if (bz==1) s2=s2*10+(x-'0');
}
s3=s1+s2;
if (s3>100000000) printf("Large"); else printf("%lld",s3);
return 0;
}