在执行字符统计的时候跳过了调用自定义函数

#include <stdio.h>
#include <ctype.h>
#include <string.h>
#define MAXSIZE 100

int letters = 0, digits = 0, others = 0;

void fun1(char s[])
{
    int m;
    int ch;
    m = strlen(s);
    for (ch = 0; ch < m; ch++)
    {

        if (isalpha(s[ch]))
        {
            letters++;
        }
        else if (isdigit(s[ch]))
        {
            digits++;
        }
        else
        {
            others++;
        }
    }
}


int main()
{
    void fun1(char l[]);
    int fun2(int nn);

    int key, n, a, b;
    char s[MAXSIZE];
    printf("请输入密码:");
    scanf("%d", &key);

    if (key == 123)
    {
        printf("********\n");
        printf("1.字符分类统计\n");
        printf("2.打印自定义菱形\n");
        printf("********\n");
        printf("请输入指令");
        scanf("%d", &n);

        switch (n)
        {
        case 1:
        {
            printf("请输入字符串:");
            scanf("%c", &s);
            fun1(s);
            printf("\n统计结果:\n字母=%d \n数字=%d \n其他=%d", letters, digits, others);
            return 0;
            break;
        }
        
        }
    }
    else
        printf("密码错误");
}

第57行是%s，写成%c了