Switch Case and a simple program in C language

C Programming switch Statement

Decision making are needed when, the program encounters the situation to choose a particular statement among many statements. If a programmer has to choose one block of statement among many alternatives, nested if...else can be used but, this makes programming logic complex. This type of problem can be handled in C programming using switch statement.

A simple Program:

#include<stdio.h>                                 //header file

//Author: Humaun Kabir 

main()                                              //main function

{

    char gradeName;                                 //variable declaration

    printf("Enter your Grade:");               

    scanf("%c",&gradeName);                         //taking input from user

     

        switch(gradeName){                          //start point of switch case

            case 'A':

            case 'a':

                printf("Excellent\n");

                break;

            case 'b':

            case 'B':

                printf("Good\n");

                break;

            case 'c':

            case 'C':

                printf("Less good\n");

                break;

            case 'd':

            case 'D':

                printf("Partially good\n");

                break;

            case 'f':

            case 'F':

                printf("Very bad\n");

            default:

                printf("Keyword not found\n");

                break;

        }                                               //end of switch case

}                                                       //end of program