字符串中删除数字

#include<string.h>
#define MAX 100
#include<iostream>
using namespace std;
int main()
{
    printf("在西安的古道，写着庸俗的代码\n");
    
    char  str[MAX];
    int count = 0;
    cin.getline(str,MAX);
    int len = strlen(str);
    char temp[MAX];
    for (int i = 0; i<len; i++)
    {
        if (str[i]<'0'||str[i]>'9')
        {
            temp[count++] = str[i];
        }
    }
    temp[count] = '\0';
    strcpy_s(str, temp);
    printf("%s",str);
    return 0;
    
}