代码--字符串压缩

abbcccdddeeeee  -→1a2b3c4d5e

#include<iostream>
#include<string>

using namespace std;
int main()
{
    char str[51];
    char tmp[51];

    while(gets(str)) {
        int len = strlen(str);
        int index = 0;
        int count = 1;

        for(int i = 0; i < len; i++) {
            if(str[i] == str[i+1])
                count ++;
            else {
                tmp[index++] = count + '0';
                tmp[index++] = str[i];
                count = 1;
            }
        }
        tmp[index] = '\0';
        strcpy(str,tmp);
        cout << str << endl;
    }
    return 0;
}