C 程序：带有break的switch-case

原文：https://www.studytonight.com/c/programs/basic/switch-case

下面是一个带断点的switch-case程序。

switch()只能包含char和int。

break用于退出开关语句。

切换的情况可以不用默认的情况。

另一个信息是char变量总是在''内初始化(单引号)。

下面是 C 语言教程，讲解 C 中的switch-case→ switch-case

#include<stdio.h>

int main()
{
    printf("\n\n\t\tStudytonight - Best place to learn\n\n\n");

    // Local Variable Definition
    char grade;
    printf("Enter your grade:\n");
    scanf("%c", &grade);

    switch(grade)
    {
        case 'A':
            printf("Excellent\n");
            break;
        case 'B':
            printf("Keep it up!\n\n");
            break;
        case 'C':
            printf("Well done\nbreak keyword takes execution to exit the switch case\n\n");
            break;
        case 'D':
            printf("You passed\n");
            break;
        case 'F':
            printf("Better luck next time\n");
            break;
        default:
            printf("Invalid grade\n");
    }
    printf("Your grade is %c\n",grade);
    printf("\n\n\t\t\tCoding is Fun !\n\n\n");
    return 0;
}

输出:

不带break的开关箱

下面是一个关于switch-case的程序，没有中断。

如果没有break语句，则除default之外的匹配案例后面的案例将被执行。

#include<stdio.h>

int main()
{
    printf("\n\n\t\tStudytonight - Best place to learn\n\n\n");

    /* Local Variable Definition */
    char grade;
    printf("Enter your grade:\n");
    scanf("%c", &grade);

    switch(grade)
    {
        case 'A':
            printf("Excellent\n");
        case 'B':
            printf("\n\n\nKeep it up!\n\nNo break statement\n\nHence all the case following this(but not the ones above this) except the default case will get executed !\n\n");
        case 'C':
            printf("\n\n\t\tCase C : Well done !\n\n");
        case 'D':
            printf("\t\tCase D : You passed!\n\n");
        case 'F':
            printf("\t\tCase E : Better luck next time\n\n\n");
        default:
            printf("\t\tDefault Case : Invalid grade\n\n\n");
    }
    printf("Your grade is %c\n",grade);
    printf("\n\n\t\t\tCoding is Fun !\n\n\n");
    return 0;
}

输出: