‘n’ NATURAL NUMBERS AND ITS SUM

AIM

To write a C program to find the sum of ‘n’ natural numbers and its sum.

ALGORITHM

Step 1: Start

Step 2: Read n

Step 3: if (n=0), if not go to step 5

Step 4: Print Invalid number, go to step 2

Step 5: ißn, sß1, Print i

Step 6: if (i=0), if not go to step 8

Step 7: Print s, go to step 10

Step 8: sß(s+1)

Step 9: iß(i-1), go to step 4

Step 10: Stop

PROGRAM

#include<conio.h>

#include<stdio.h>

void main()

{

int i,n,s=0;

            printf(“Enter your limit:”);

            scanf(“%d”,&n);

            if (n==0)

                        printf(“\nEnter a valid number”);

            printf(“Numbers:”);

            for (i=1;i<=n;i++)

            {

                        printf(“%d\t”,i);

                        s=s+i;

}

printf(“\nSum:%d”,s);

            getch();

}