Monday, 7 March 2016

C Program to Find Sum of Natural Numbers Using While Loop

Problem :- Write A C Program to Find Sum of Natural Numbers Using While Loop

Logic :- What is Natural Number ?
Natural Numbers Are Positive numbers Start With 1 Not 0 ( Zero )
So idea is simple use loop ans initialize with 1 and run into last terms ( Till you Want ) ,you can also print the sum of natural number using formula there are 2 method for solve.
Method 1 :-Using Formula

Natural Number = (N*(N+1))/2

Method 2:- Using Loop

while(count<=n)
{
sum+=count;
++count;
}

Try Yourself C++ Program To Check Number Is Armstrong Or Not

Solution :-

Method 1:-

#include<stdio.h>
int main()
{
  //Ghanendra Yadav
    int n, count=1, sum=0;
    
    while(1)
    {
printf("\nEnter The Natural Number :\n");
    scanf("%d",&n);
    
while(count<=n)
    {
        sum+=count;
        ++count;
    }
    
printf("\nSum Of Natural Number Is  = %d\n",sum);
    
}
return 0;
}

Method 2:-

#include<stdio.h>
int main()
{
  //Ghanendra Yadav
    int n,sum=0;
    
    while(1)
    {
printf("\nEnter The Natural Number :\n");
    scanf("%d",&n);
    
sum=(n*(n+1))/2;
printf("\nSum Of Natural Number Is  = %d\n",sum);
    
}
return 0;
}

Output:-

C Program to Find Sum of Natural Numbers Using While Loop

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