C++ program to find sum of series 1 + 2 + 3 +……+ n

Here you will get source code of C++ program to find sum of series 1 + 2 + 3 +……+ n terms.

For Example

1 + 2 + 3 + 4 + 5 + ……+ n

Flowchart to find sum of series 1+2+3+4+….+n

#include <iostream>

using namespace std;

int main()

{

int n,i=1,sum=0;

cout<<"\nEnter the value of n : ";

cin >> n;

while(i<=n)

{

sum=sum+i;

i++;

}

cout<<"\n Sum of series upto "<<n<<" is "<<sum;

return 0;

}

Output

Enter the value of n : 5

Sum of series upto 5 is 15

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