C using simple pro

C Program to Calculate the Sum of Odd & Even Numbers

#include

#include 

void main()

{

    int i, num, odd_sum = 0, even_sum = 0;

    clrscr();

    printf("Enter the value of num\n");

    scanf("%d", &num);

    for (i = 1; i <= num; i++)

    {

        if (i % 2 == 0)

            even_sum = even_sum + i;

        else

            odd_sum = odd_sum + i;

    }

    printf("Sum of all odd numbers  = %d\n", odd_sum);

    printf("Sum of all even numbers = %d\n", even_sum);

    getch();

}

Output

Enter the value of num

10

Sum of all odd numbers = 25

Sum of all even numbers = 30

C Program to Reverse a Number & Check if it is a Palindrome

#include 

#include 

void main()

{

    int num, temp, remainder, reverse = 0;

    clrscr();

    printf("Enter an integer \n");

    scanf("%d", &num);

    temp = num;

    while (num > 0)

    {

        remainder = num % 10;

        reverse = reverse * 10 + remainder;

        num /= 10;

    }

    printf("Given number is = %d\n", temp);

    printf("Its reverse is  = %d\n", reverse);

    if (temp == reverse)

        printf("Number is a palindrome \n");

    else

        printf("Number is not a palindrome \n");

    getch();

}

Output

Enter an integer

6789

Given number is = 6789

Its reverse is  = 9876

Number is not a palindrome

C Program to Find the Number of Integers Divisible by 5

#include 

#include

void main()

{

    int i, num1, num2, count = 0, sum = 0;

    clrscr();

    printf("Enter the value of num1 and num2 \n");

    scanf("%d %d", &num1, &num2);

    printf("Integers divisible by 5 are \n");

    for (i = num1; i < num2; i++)

    {

        if (i % 5 == 0)

        {

            printf("%3d,", i);

            count++;

            sum = sum + i;

        }

    }

    printf("\n Number of integers divisible by 5 between %d and %d =

 %d\n", num1, num2, count);

    printf("Sum of all integers that are divisible by 5 = %d\n", sum);

   getch();

}

Output

Enter the value of num1 and num2

12 17

Integers divisible by 5 are

 15,

Number of integers divisible by 5 between 12 and 17 = 1

Sum of all integers that are divisible by 5 = 15

C Program to Read Two Integers M and N & Swap their Values

#include 

#include

void swap(float *ptr1, float  *ptr2);

void main()

{

float m, n;

clrscr();

printf("Enter the values of M and N \n");

scanf("%f %f", &m, &n);

printf("Before Swapping:M = %5.2ftN = %5.2f\n", m, n);

swap(&m, &n);

printf("After Swapping:M  = %5.2ftN = %5.2f\n", m, n);

}

void swap(float *ptr1, float *ptr2)

{

float temp;

temp = *ptr1;

*ptr1 = *ptr2;

*ptr2 = temp;

}

Output

Enter the values of M and N

2 3

Before Swapping:M =  2.00    N =  3.00

After Swapping:M  =  3.00    N =  2.00