double computeSeriesSum(int n) {
double sum = 0.0;
int sign = 1;
for (int i = 1; i <= n; ++i) {
sum += sign * (1.0 / i) * (1.0 / i);
sign *= -1; // alternate the sign
}
return sum;
}
int main(int argc, char *argv[]) {
int n;
if (argc > 1) {
n = std::stoi(argv[1]);
} else {
std::cout << "Enter the value of n: ";
std::cin >> n;
}
if (n <= 0) {
std::cerr << "Error: Invalid value of n. Please enter a positive integer.\n";
return 1;
}
double sum = computeSeriesSum(n);
std::cout << "Sum of the first " << n << " terms of the series: " << sum << std::endl;
return 0;
include
double computeSeriesSum(int n) { double sum = 0.0; int sign = 1;
}
int main(int argc, char *argv[]) { int n;
}