if else program in c language

 1.write a program input a number then print that number is even or odd.

#include<stdio.h>

#include<conio.h>

void main()

{

int no;

clrscr( );

printf("enter a number");

scanf("%d",&no);

if(no%2==0)

    {

        printf("no is even");

    }

else

    {

        printf(" no is odd");

    }

}

2.write a program input a number then print that number is positive or negative;.

#include<stdio.h>

#include<conio.h>

void main()

{

int no;

clrscr( );

printf("enter a number");

scanf("%d",&no);

if(no>0)

    {

        printf("no is positive");

    }

else

    {

        printf(" no is negative");

    }

}

3.write a program input two numbers then print biggest one.

#include<stdio.h>

#include<conio.h>

void main()

{

int a,b,;

clrscr( );

printf("enter two number");

scanf("%d%d",&a,&b);

if(a>b)

    {

        printf("a is biggest");

    }

else

    {

        printf(" b is biggest");

    }

}

4.write a program input a positive number then print that number single or multi digit.

#include<stdio.h>

#include<conio.h>

void main()

{

int no;

clrscr( );

printf("enter a number");

scanf("%d",&no);

if(no<=9)

    {

        printf("no is single digit ");

    }

else

    {

        printf(" no is multi digit");

    }

}

5.write a program enter age of a person then print eligible for vote or not?

#include<stdio.h>

#include<conio.h>

void main()

{

int age;

clrscr( );

printf("enter age of a person");

scanf("%d",&age);

if(age>=18)

    {

        printf("eligible for vote ");

    }

else

    {

        printf("not eligible for vote");

    }

}

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