调试到gets（s）报错了

Question

#include<stdio.h>
int main()
{
    int i, k;
    char s[100], t[100];
    long num=0;
    printf("请输入一个句子:");
    get(s);
    for (i = 0, k = 0; s[i] != '\0'; i++)
    {
        if ((s[i] >= '0' && s[i] <= '9') || (s[i] >= 'A' && s[i] <= 'F') || (s[i] >= 'a' && s[i] <= 'f'))
            t[k++] = s[i];
    }
        t[k] = '\0';
    
    for ( i = 0; t[i] != '0'; i++)
    {
        if (t[i] >= '0' && t[i] <= '9')num = num * 16 + (t[i] - 48);
        else if (t[i] >= 'A' && t[i] <= 'F')num = num * 16 + (t[i] - 55);
        else num = num * 16 + (t[i] - 87);

    }
    printf("新的字符串为:%s\n",t);
    printf("num=%d", num);
    return 0;

}
![img](https://img-mid.csdnimg.cn/release/static/image/mid/ask/7cd5e7c10d134d8b8111c5c074cf07f0.jpeg "#left")

Answer 1

gets_s