#include<iostream>
using namespace std;
void connect(char *p1,char *p2)
{
    for(;*p1!='\0';p1++);
    for(;*p2!='\0';p2++)
        {
            if(*p2>='0'&&*p2<='9')
            {
                *p1=*p2;
                p1++;
            }
        }
        *p1='\0';
}
int main()
{
    char str1[30],str2[20];
    char *ps1=str1;
    char *ps2=str2;
    cout<<"请输入两个字符串"<<endl;
    cin.getline(ps1,30);
    cin.getline(ps2,20);
    connect(ps1,ps2);
    cout<<"连接后"<<endl;
    cout<<ps1<<endl;
    
    return 0;
}