字符串压缩

#include<stdio.h>
#include<stdlib.h>
#include<iostream>
#include<string.h>
using namespace std;
void itoa(int n, char *&str)
{
    char *p = str;
    char *p1 = str;
    char temp;
    int len = 0;
    if (n < 0)
    {
        *p++ = ‘-‘;
        n = -n;
    }
    do
    {
        *p++ = n % 10 + ‘0‘;
        n = n / 10;
        len++;
       // printf("n%d ",n);
    }while(n > 0);
   // printf("ss%d %s",len,p);
    *p-- = ‘\0‘;
    //printf("%d %s",len,p);
    //if(len % 2 == 1)
    //    len++;
    for( len /= 2; len > 0; len--){
         temp = *p;
        *p-- = *str;
        *str++ = temp;
    }
    str = p1;
}
void stringZip1(const char *pInputStr, long lInputLen, char *pOutputStr)
{
    const char *p = pInputStr;
    int j,num,s,i;
    j = 0;
    num = 1;
    p++;
    while( *p != ‘\0‘)
    {
        while( *p == *(p-1) && *p != ‘\0‘)
        {
            p++;
            num++;
        }
        if( num > 1)
        {
            s = 0;
            int k;
            int temp = num;
            while(num > 0)
            {
                num /= 10;
                s++;
            }
            for(i=j,k=0; k < s; i--,k++)
            {
                pOutputStr[i+s-1] = temp % 10 + ‘0‘;
                temp /= 10;
            }
            j += s;
            pOutputStr[j++] = *(p-1);
            num = 1;
            p++;
        }
        else
            {
                pOutputStr[j++] = *(p-1);
                p++;
            }
        }
    if (*(p-1) != *(p-2))
        pOutputStr[j++] = *(p-1);
    pOutputStr[j] = ‘\0‘;
    printf("%s\n",pOutputStr);

}
int main()
{
    char s[40],s1[40];
    char *s2 = (char*)malloc(sizeof(char) * 40);
    while(scanf("%s",s))
    {
        stringZip1(s,strlen(s),s1);
    }

}