#include "stdio.h"
#include "stdlib.h"
int main()
{
char s[] = "123ss456w7";
int nShow = 1;
for (int i = 0; i < (int)strlen(s); i++)
{
if (s[i] >= '0' && s[i] <= '9')
{
printf("%c", s[i]);
nShow = 1;
}
else
{
if (nShow) printf("\n");
nShow = 0;
}
}
}