HDU 2719 The Seven Percent Solution

#include <cstdio>

#include <cstring>

int main()

{

    char s[10000];

    while(gets(s),s[0]!='#')

    {

        int i=0;

        while (i<strlen(s)) 

        {

            if (s[i]==' ') printf("%s","%20");

            else if (s[i]=='!') printf("%s","%21");

            else if (s[i]=='$') printf("%s","%24");

            else if (s[i]=='%') printf("%s","%25");

            else if (s[i]=='(') printf("%s","%28");

            else if (s[i]==')') printf("%s","%29");

            else if (s[i]=='*') printf("%s","%2a");

            else printf("%c",s[i]);

            i++;

        }

        printf("\n");

    }

    return 0;    

}