Example : Write a program in c to display the name of week days from Sunday to Monday using switch/key 1 to 7.

#include <stdio.h>
#include <conio.h>
void main()
 {
    int day;
	    
    printf("Enter day number from (1-7):\n");
    printf("Press 1 to see Sunday:\n");
    printf("Press 2 to see Monday and so on ...:\n");
    
    printf("\nEnter/Press your choice button now:\n");

    scanf("%d", &day);

    switch(day)
    {
        case 1:           
            printf("Sunday");            
            break;
        case 2:             
            printf("Monday");
            break;
        case 3:           
            printf("Tuesday");
            break;
        case 4:
            printf("Wednesday");            
            break;
        case 5:            
            printf("Thursday");
            break;
        case 6: 
            printf("Friday");
            break;
        case 7: 
            printf("Saturday");            
            break;
            
        default:          
            printf("Oh! You entered a Wrong choice, Pls enter number in between 1-7.");
    }
   getch();	
}

Example : Write a program in c to display the name of week days from Sunday to Monday using switch 0 to 27.

#include <stdio.h>
#include <conio.h>
void main()
 {
    int num;
	    
    printf("Enter number from (0-27) to see the output:\n");
    
    printf("Press 0-3 to see Sunday:\n");
    printf("Press 4-7 to see Monday:\n");
    printf("Press 8-11 to see Tuesday:\n");
    printf("Press 12-15 to see Wednesday:\n");
    printf("Press 16-19 to see Thursday:\n");
    printf("Press 20-23 to see Friday:\n");
    printf("Press 24-27 to see Saturday:\n");
    
    printf("\nEnter/Press your choice button now:\n");

    scanf("%d", &num);
    switch(num)
    {
        case 0: case 1:	case 2:	case 3:			           
                printf("Sunday");            
                break;
            
        case 4:
	case 5:
	case 6:
	case 7:             
               printf("Monday");
               break;
            
        case 8: case 9: case 10: case 11:       
               printf("Tuesday");
               break;
            
        case 12: case 13: case 14: case 15:
               printf("Wednesday");            
               break;
            
        case 16: case 17: case 18: case 19:            
            printf("Thursday");
            break;
            
        case 20: case 21: case 22: case 23: 
               printf("Friday");
               break;
            
        case 24: case 25: case 26: case 27: 
               printf("Saturday");            
               break;
            
        default:          
               printf("Oh! You entered a Wrong choice, Pls enter number in between 1-7.");
    }     
	getch();	
}

Example : Write a program in c to display the name of month from January to December using unique switch/key letters.

#include<stdio.h>
#include<conio.h>
void main()
{
	char x;
	clrscr();
	
	printf("Press buttom J/j to print January\n");
	printf("Press buttom F/f to print February\n");
	printf("Press buttom M/m to print March\n");
	printf("Press buttom A/a to print April\n");
	printf("Press buttom I/i to print May\n");
	printf("Press buttom U/u to print June\n");
	printf("Press buttom Y/y to print July\n");
	printf("Press buttom E/e to print August\n");
	printf("Press buttom S/s to print September\n");
	printf("Press buttom O/o to print October\n");
	printf("Press buttom N/n to print November\n");
	printf("Press buttom D/d to print December\n");
	
	printf ("\nEnter single letter of your choice :");
	scanf("%c",&x);
	
	switch(x)
	{
		case'j':
		case'J':
				printf("January");
				break;
		case'f':
		case'F':
				printf("February");
				break;
		case'm':
		case'M':
				printf("March");
				break;
		case'a':
		case'A':
				printf("April");
				break;
		case'i':
		case'I':
				printf("May");
				break;
		case'u':
		case'U':
				printf("June");
				break;
		case'y':
		case'Y':
				printf("July");
				break;
		case'e':
		case'E':
				printf("August");
				break;
		case's':
		case'S':
				printf("September");
				break;
		case'o':
		case'O':
				printf("October");
				break;
		case'n':
		case'N':
				printf("November");
				break;
		case'd':
		case'D':
				printf("December");
				break;
		default:
			printf("Entered choice is incorrect, change it");
	}
	getch();
}

Example : Write a program in c to display the simple calculator result using +,-,*,/ symbols in switch case statement.

#include <stdio.h>
#include <conio.h>
void main()
 {
    int num1,num2,result;
    char symbol;	    
    
    printf("Press + button to see Addition result:\n");
    printf("Press - button to see Subtraction result:\n");
    printf("Press * button to see Multiplication result:\n");
    printf("Press / button to see Division result:\n");
    
    printf("\nNow Enter or Press your choice button:\n");
    scanf("%c",&symbol);
    
    printf("\nEnter two integer value:\n");
    scanf("%d%d",&num1,&num2);	
    
    switch(symbol)
    {
        case '+':
            	result=num1+num2;
            	printf("%d",result);
            	break;
        case '-':
            	result=num1-num2;
            	printf("%d",result);
            	break;
        case '*':
            	result=num1*num2;
            	printf("%d",result);
            	break;
        case '/':
            	result=num1/num2;
            	printf("%d",result);
            	break;        
        default:
            	printf("Oh no! Entered symbol is incorrect,re-enter correct one");      
    }
	getch();	
}

Example : Write a program in c to display the simple calculator result using specific letters in switch case statement.

#include <stdio.h>
#include <conio.h>
void main()
 {
    int num1,num2,result;
    char symbol;	    
    
    printf("Press A/a button to see Addition result:\n");
    printf("Press S/s button to see Subtraction result:\n");
    printf("Press M/m button to see Multiplication result:\n");
    printf("Press D/d button to see Division result:\n");
    
    printf("\nNow Enter or Press your choice button:\n");
    scanf("%c",&symbol);
    
    printf("\nEnter two integer value:\n");
    scanf("%d%d",&num1,&num2);	
    
    switch(symbol)
    {
        case 'A':
        case 'a':
        case '+':	
            	result=num1+num2;
            	printf("%d",result);
            	break;

        case 'S':
        case 's':
        case '-':	
            	result=num1-num2;
            	printf("%d",result);
            	break;

        case 'M':
        case 'm':
        case '*':	
            	result=num1*num2;
            	printf("%d",result);
            	break;

        case 'D':
        case 'd':
        case '/':
            	result=num1/num2;
            	printf("%d",result);
            	break;
        
        default:
            	printf("Oh no! Entered symbol is incorrect,re-enter correct one");  
    }
	getch();	
}

Example : Write a program in c to check vowel or consonant letter using switch case statement.

#include <stdio.h>
#include <conio.h>
void main()
 {
    char ch;
     
    printf("Enter a character from keyboard: ");
    scanf("%c",&ch);     
    
    if((ch>='A' && ch<='Z') || (ch>='a' && ch<='z'))
    {
        switch(ch)
        {
            case 'A':
            case 'E':
            case 'I':
            case 'O':
            case 'U':
                     printf(" The entered character %c is a Capital VOWEL.\n",ch);
                     break;
            case 'a':
            case 'e':
            case 'i':
            case 'o':
            case 'u':
                    printf(" The entered character %c is a Small VOWEL.\n",ch);
                    break;
            default:
                printf("The entered character %c is a CONSONANT.\n",ch);            
        }
    }
    else
    {
        printf(" The entered character %c is not an alphabet.\n",ch);
    }  
	getch();	
}
#include <stdio.h>
#include <conio.h>
void main()
 {
	int month;
	
	printf("Enter a digit value for month: ");
	scanf("%d",&month);
	
	switch(month)
	{
		case  4:
		case  6:
		case  9:
		case 11:
			    printf("30 days");
			    break;
		case  1:
		case  3:
		case  5:
		case  7:
		case  8:
		case 10:
		case 12:
			    printf("31 days");
			    break;			
		case 2:
			   printf("28 days");
			   break;		
		default:
			   printf("Entered value is Incorrect");
			   break;		
	}	
    
	getch();	
}

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Categories: C

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