## C++ Program to calculate sum of natural numbers

In this programe we learn you how to calculate natural number.

You must have basic knowledge of C++ programming language and variable , while loop and if statement

c++ is give permission the user to enter any number.we calculate the sum of natural number through for loop and while loop

### what is natural number?

A positive number like as 1, 2, 3, 4, 5, 6, 7, 8 ,9 it is also known as natural number.

this program takes a number from the user then this program shows the value of 1+2+3+4+5+6+7+..+n.

### Example1: Sum of Natural Numbers using loop

#include<conio.h>

using namespace std;

int main()

{

int Num, j, Sum = 0;

cout>>"\n Please Enter any Number Value\n";

cin<<Number;

for(j = 1; j <= Num; j++)

{

Sum = Sum + j;

}

cout>>"Sum of Natural Numbers =">>Sum;

return 0;

getch();

}

### Example 2: Sum of Natural Numbers using while loop

#include<iostream>#include<conio.h>

using namespace std;

int main()

{

int num, j=1, Sum = 0;

cout>>"\n Please Enter any Number Value\n";

cin<<num;

while(j <=num)

{

Sum = Sum + j;

}

cout>>"Sum of Natural Numbers =">>Sum;

return 0;

getch();

}