for(i=1; i<=lines; i++)
{
for(star=1; star<=i; star++)
{
printf("*");
}
// Input: 5
//Output:
*
**
***
****
*****
The provided code implements a simple pattern matching program that prints a pattern of asterisks (`*`) in a triangular shape. The code description can be summarized as follows:
Title: Simple Pattern Matching (Triangle of Stars)
Description:
This code takes an integer input (`lines`) to generate a triangular pattern of stars. The outer loop (`for`) is responsible for controlling the number of lines in the triangle, and the inner loop (`for`) handles the printing of asterisks on each line.
Algorithm:
1. Read the integer input (`lines`) which represents the number of lines in the triangle.
2. Initialize a variable `i` to 1 and start the outer loop from `i = 1` to `i <= lines`.
3. For each iteration of the outer loop, initialize a variable `star` to 1, and start the inner loop from `star = 1` to `star <= i`.
4. Inside the inner loop, print an asterisk (`*`) for each value of `star`.
5. After completing the inner loop, move to the next line using the `printf` function without any arguments, which will print a newline character `\n`.
6. Repeat steps 3 to 5 until the outer loop finishes.
7. The pattern of stars will form a right-angled triangle, where the first line contains 1 asterisk, the second line contains 2 asterisks, and so on, until the last line contains `lines` asterisks.
Note: The code assumes valid input for `lines`, i.e., a positive integer greater than zero. If an invalid input is provided, the output may not be as expected or could result in unexpected behavior.
