#include <<a href="https://www.baidu.com/s?wd=iostream.h&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1YLmWwBPADsP1m3ujckPjbv0ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6KdThsqpZwYTjCEQLGCpyw9Uz4Bmy-bIi4WUvYETgN-TLwGUv3EnH61PHndrHmz" target="_blank" class="baidu-highlight">iostream.h</a>>

int main()

{

    char a[50]="1ab2cd3ef45g";

    char b[50];

    int cnt_index=0,cnt_int=0;

    for(int i=0;a[i]!='\0';++i) 

    {

        if(a[i]>='0'&& a[i]<='9') 

        {

            cnt_int*=10;//这里这个是什么意思

            cnt_int+=a[i]-'0'; //这个是什么意思

        }

        else if((a[i]>='a'&&a[i]<='z')||(a[i]>='A'&&a[i]<='Z')) 

        {

            b[cnt_index++]=a[i]; 

        }

    }

    b[cnt_index++]='\0'; 

    cout<<b<<endl;

    cout<<cnt_int<<endl; 

    return 0;

}