//A program to print/display sum of 1 to n natural numbers.

#include<stdio.h>

#include<conio.h>

void main()

{

int k=1,n,sum=0;

printf("enter value of 'n'\n");

scanf("%d",&n);

while(k<=n)

{

sum=sum+k;

k++;

}

printf("sum=%d",sum);getch();

}

#include<stdio.h>

#include<conio.h>

void main()

{

int k=1,n,sum=0;

printf("enter value of 'n'\n");

scanf("%d",&n);

while(k<=n)

{

sum=sum+k;

k++;

}

printf("sum=%d",sum);getch();

}

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