menghiutng deret N

ALGORITMA :

1.inisialisasi semua variabel (i,N,Jumlah)
2.masukkan nilai N
3.inisialiasi jumlah = 0
4.for (i=1; i<=N; i++) {jumlah = jumlah + i ;} 5.printf(jumlah) C++ : #include
#include

using namespace std;

class hitung
{

public:
int proses();
void input();

private:
int n;
float rumus,jumlah,total;
};

void hitung::input()
{
cin >> n;
cout << endl; } int hitung::proses() { jumlah = 0; total = 0; rumus = -1; for(int j=1; j<=n; j++){ rumus = (rumus * (-1)); total = rumus / j; jumlah+= total; if(j==1) cout << " ( " << total << " ) "; if( j > 1)
cout << " + ( " << total << " ) ";
}

cout << endl << endl << " Jumlah Rekursif = " << jumlah;
cout << endl;

return jumlah;
}

int main(int argc, char *argv[])
{
cout << " Program Menghitung Jumlah dari Dumus 1-(1/2)+(1/3)-(1/4)+...+(1/n) ";
cout << endl;
cout << endl;
cout << " Masukkan Nilai n : ";

hitung deret;
deret.input();
deret.proses();

system("PAUSE");
return EXIT_SUCCESS;
}