删除字符串中的数字

#include <iostream>
using namespace std;

void RemoveNumber(char * str)
{
char *read = str;
char *write = str;

while (*read != '\0')
{
if (*read < '0' || *read > '9')
{
*write = *read;
write++;
}
read++;
}

*write = '\0';
}

int main()
{
char str[] = "a88b";
RemoveNumber(str);
cout<<str<<endl;
return 0;
}