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Program to find sum of odd numbers in given range

Program to find sum of odd numbers in given range

Write a C program to find sum of all odd numbers from 1 to n using for loop. How to find sum of all odd numbers in a given range in C programming. Logic to find sum of odd numbers in a given range using loop in C programming.

    Input upper limit to find sum of odd numbers from user. Store it in some variable say N.
    Initialize other variable to store sum say sum = 0.
    To find sum of odd numbers we must iterate through all odd numbers between 1 to n. Run a loop from 1 to N, increment 1 in each iteration. The loop structure must look similar to for(j=1; j<=N; j++).
    Inside the loop add sum to the current value of j i.e. sum = sum + j.
    Print the final value of sum.

#include <stdio.h>

int main()
{
    int j, start, end, sum=0;

    /* Input range to find sum of odd numbers */
    printf("Enter lower limit: ");
    scanf("%d", &start);
    printf("Enter upper limit: ");
    scanf("%d", &end);

    /* If lower limit is even then make it odd */
    if(start % 2 == 0)
    {
        start++;
    }
    
    /* Iterate from start to end and find sum */
    for(j=start; j<=end; j+=2)
    {
        sum += j;
    }

    printf("Sum of odd numbers between %d to %d = %d", start, end, sum);

    return 0;
}

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