c - 在C中获取 "highest"字符

Question

我试图编写一个程序来获取一个人输入的最高字符。我编写了一个程序，它可以毫无问题地获得最高数量的工作，但对于字符它不起作用。这是我的代码:

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

int main(int argc, const char * argv[]) {
    char characters[5];
    char highest = "a";

    printf("Please enter five characters: \n");
    for (int i = 0; i <= 4; i+=1) {
        scanf("%c", characters[i]);
    }

    printf("These are the characters you entered: ");

    for (int i = 0; i <= 4; i+=1) {
        printf("%c  ", characters[i]);
    }

    for (int i = 0; i <= 4; i+=1) {
        if (characters[i] > highest) {
            highest = characters[i];
        }
    }

    printf("\nThe highest character is %c", highest);
}

我做错了什么？

Answer 1

您尝试将字符串文字 "a" 转换为 char。您应该使用字 rune 字。

char highest = "a";
//should be
char highest = 'a';

此外，scanf需要一个指针来存储读取的结果。

scanf("%c", characters[i]);
//should be
scanf("%c", &characters[i]);

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