C Program: Find the Sum of First 'n' Integers by using While Statement

Statement of C Program:  Calculate the sum of First 'n' Integers :

 
#include<stdio.h>

#include<conio.h>

void main()

{

int N,b ;

sum=0;

clrscr();

printf("Enter the value of N\n ");

scanf("%d" ,&N);

b=1;

while(b<=N)

{

sum=sum+b;

// sum+=b

b++;

}

printf(" Sum=%d\n" , sum);

}

Output:

Enter the value of N

10

Sum=55