使用循环显示从 A 到 Z 的字符. C

#c #环形

打印英文字母

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#include <stdio.h>
int main() {
    char c;
    for (c = 'A'; c <= 'Z'; ++c)
        printf("%c ", c);
    return 0;
}

Output result

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

打印小写/大写字母

xxxxxxxxxx
 
#include <stdio.h>
int main() {
    char c;
    printf("Enter u to display uppercase alphabets.\n");
    printf("Enter l to display lowercase alphabets. \n");
    scanf("%c", &c);
​
    if (c == 'U' || c == 'u') {
        for (c = 'A'; c <= 'Z'; ++c)
            printf("%c ", c);
    } else if (c == 'L' || c == 'l') {
        for (c = 'a'; c <= 'z'; ++c)
            printf("%c ", c);
    } else {
        printf("Error! You entered an invalid character.");
    }
​
    return 0;
}

Output result

Enter u to display uppercase alphabets. 
Enter l to display lowercase alphabets. l
a b c d e f g h i j k l m n o p q r s t u v w x y z

C

C 语言中的代码示例和问题解答

使用循环显示从 A 到 Z 的字符. C

C

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