#include <stdio.h>
#include <conio.h>
int main ()
{
    char a[100],b[100],*p,*q;
    int n=0;
    printf("Introdu a,b:");
    scanf("%s%s",a,b);
    p=a;q=b;
    while(p!=0 && q!=0)
    {p++;q++;printf("%s%s",*p,*q);}
    if(p==0)
       while(q!=0)
       {n--;q++;}
    else
       while(p!=0)
       {n++;p++;}
    printf("%d",n );
    getch();
    return 0;
}