A+B

#include<iostream>
#include<cstdio>
# include<cstring>
using namespace std;
int main(){
char a1[101],b1[101];
int a[101],b[101],c[10100],lena,lenb,lenc,i,j,x;
memset(a,0,sizeof(a));
memset(b,0,sizeof(b));
memset(c,0,sizeof(c));
scanf(“%s”,a1);
scanf(“%s”,b1);
lena=strlen(a1);
lenb=strlen(b1);
for(i=0;i<=lena-1;i)a[lena-i]=a1[i];
for(i=0;i<=lenb-1;i)b[lenb-i]=b1[i];
lenc=1;
x=0;
while(lenc<=lena||lenc<=lenb){
c[lenc]=a[lenc]+b[lenc]+x;
x=c[lenc]/10;
c[lenc]%=10;
lenc++;
}
c[lenc]=x;
if(c[lenc]==0)
lenc–;
for(i=lenc;i>=1;i–)
cout<<c[i];
cout<<endl;
return 0;
}