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;
}