#include <stdio.h>



void *Rle(char *str)
{
    int len(char*item){int t=0;while(item[t] !='\0')t++;return t;}
    int si = len(str);
    int st=0,c_out=0,c_in=0,p=0;
    char *temp = malloc(len(str)+1);




    for(c_out=0;c_out<si;c_out++)
    {

        for(c_in=c_out;c_in<si;c_in++)
        {

            if(str[c_out]==str[c_in])
            {
                st++;
                c_out=c_in;

                if(c_out == si-1)
                {


                    *(temp+p)=str[c_out];
                    p++;
                    *(temp+p)=st+'0';
                    p++;
                    *(temp+p)='\0';

                }
            }


            else
            {
                temp[p]=str[c_out];
                p++;
                *(temp+p)=st+'0';
                p++;
                st=0;
                c_out=c_in-1;
                break;
            }
        }


    }

    return temp;
}



int main()
{
    printf("%s \n",Rle("x"));
    printf("%s \n",Rle("www"));
    printf("%s \n",Rle("wwwwwwiee"));
    printf("%s \n",Rle("youaregoddd"));

    return 0;

}