PRINT 8-SUM AND COUNT OF EVEN AND ODD NUMBERS

• Problem Description

  
  Write a C program to find the sum of odd numbers and sum of even numbers from 1 to N. Output the computed sums on two different lines with suitable headings 
  
  
  (Inclusive of both positive and negative numbers)
  
  Input format:
  
  Input consists of n+1 integers. The first integer corresponds to n and the next n integers correspond to the numbers to be added. Consider 0 to be a positive number
  
  Example 1: 
  Input: 10
  
  Output: 
  Odd=25
  (1+3+5+7+9) = 25
  Even=30
  (2+4+6+8+10)=30
  
  If the input number is odd then the user should throw the message as "Wrong Input"
  
  Example 2:
  Input : 11
  Output=Wrong Input
  

• CODING ARENA

• #include <stdio.h>

  int main()

  {

    int n,t=0,f=0;

    scanf("%d",&n);

    if(n%2!=0)

    {

      printf("Wrong Input");

    }

    else

    {

      n=n+1;

      while(n--)

      {

        if(n%2==0)

        {

          t=t+n;

        }

        else

        {

          f=f+n;

        }

      }

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

    printf("Sum of all even numbers=%d",t);

    } 

  
  

  return 0;

  }

• Test Case 1

  
  Input (stdin)

  10
  
  

  Expected Output

  Sum of all odd numbers=25
  
  Sum of all even numbers=30

• Test Case 2

  
  Input (stdin)

  19
  
  

  Expected Output

  Wrong Input