Home > Uncategorized > For pada C++ part 2

For pada C++ part 2

Lalu jika kita menginginkan outputnya seperti ini x= 1-2+3-4+5…n

Maka programnya adalah:

#include <iostream.h>

void main()

{

int n, sign = 1;

long hasil = 0;

cout << “Menghitung 1-2+3-4…n\n”;

cout << “Nilai n: “;

cin >> n;

for (int i=1; i<= n; ++i) {

hasil += i* sign;

sign = sign * -1;

}

cout << “Hasilnya :” << hasil<<endl;

}

Dan outputnya adalah:

Menghitung 1-2+3-4…n

Nilai n: 8

Hasilnya : -4

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