Programming Example
Design a class to overload a function sumSeries() as follows:
Study this program carefully to understand the logic, output, and explanation in a structured way.
Design a class to overload a function sumSeries() as follows:
Design a class to overload a function sumSeries() as follows:
(i) void sumSeries(int n, double x): with one integer argument and one double argument to find and display the sum of the series given below:
\[ \begin{align} s &= \frac{x}{1} - \frac{x}{2} + \frac{x}{3} - \frac{x}{4} + \frac{x}{5} \dots \text{ to } n \text{ terms} \end{align} \](ii) void sumSeries(): to find and display the sum of the following series:
\[ \begin{align} s &= 1 + (1 \times 2) + (1 \times 2 \times 3) + \dots + (1 \times 2 \times 3 \times 4 \dots \times 20) \end{align} \]public class RAnsariOverload
{
void sumSeries(int n, double x) {
double sum = 0;
for (int i = 1; i <= n; i++) {
double t = x / i;
if (i % 2 == 0)
sum -= t;
else
sum += t;
}
System.out.println("Sum = " + sum);
}
void sumSeries() {
long sum = 0, term = 1;
for (int i = 1; i <= 20; i++) {
term *= i;
sum += term;
}
System.out.println("Sum=" + sum);
}
}First read the algorithm, then study the program code line by line. After that, compare the code with the output and finally go through the explanation. This approach helps learners understand both the logic and the implementation properly.
After understanding this example, try to rewrite the same program without looking at the code. Then change some values or logic and run it again. This helps improve confidence and keeps learners engaged on the page for longer.