C Program: Enter a Number and Determine It Is Even or Odd Number

This program is based on conditional statement that is if-else.
Write a Program: Enter a Number and Determine wheather it is Even or Odd Number.

#include<stdio.h>                          

// Header file contain input output functions.

#include<conio.h>                         

// Header file contain clrscr() and getch() functions.

void main()                                   

// C program execution start with this main function. No C program can execute without this main function.

{

int a,b;                                         

// Declare two variables a and b of integer data type.

clrscr();                                       

// Clear the result of previous output.
 

printf(" Enter the value of a");     

// This is output function. Enter the value of a is show on screen.

scanf("%d", &a);                     

// This is input fuction. We enter the value of variable a with the help of scanf function.

b=a%2;                                   

// The remainder value obtained after dividing integer variable a by 2 is assign to integer variable b.

if(b==0) 

// if-else condition is applied

{

printf("Number is Even");

}

else

{

printf("Number is Odd");

}

getch();

}

// If the condition b==0 is True then Number is Even execute other wise Number is Odd is executed. 

NOTE: The Lines written in // symbol is for just telling about the meaning of statement. These lines not executed in the program.

Output1:

Output1:

Enter the value of a           

44

Number is Even

Output2:

Enter the value of a              // clrscr() clears the previous output1

77

Number is Odd