如下程序有什么错误，请高手指正

Question

#include <stdio.h>
#include <string.h>

void main()
{
int length;
char answnum[10]={"123456"};
length=strlen(answunm);
printf("%d",length);
}

Answer 1

char answnum[10] = {"123456"};改为:char answnum[10] = {'1','2','3','4','5','6'};

Answer 2

不能strlen是字符串的函数

Answer 3

strlen(answunm)中的answunm写错了u和n的顺序错了