How to resolve the algorithm Loops/For step by step in the C++ programming language
How to resolve the algorithm Loops/For step by step in the C++ programming language
Table of Contents
Problem Statement
“For” loops are used to make some block of code be iterated a number of times, setting a variable or parameter to a monotonically increasing integer value for each execution of the block of code. Common extensions of this allow other counting patterns or iterating over abstract structures other than the integers.
Show how two loops may be nested within each other, with the number of iterations performed by the inner for loop being controlled by the outer for loop. Specifically print out the following pattern by using one for loop nested in another:
Let's start with the solution:
Step by Step solution about How to resolve the algorithm Loops/For step by step in the C++ programming language
this code snippet demonstrates the usage of nested for loops in C++ to create a simple right-aligned triangle pattern. The outer loop, controlled by the index variable i
, iterates through 5 rows. For each row, the inner loop, controlled by the index variable j
, iterates from 0 to i
. In each iteration of the inner loop, an asterisk (*) is printed to the console. After completing the inner loop for a row, a newline character (\n) is printed to move to the next line. The result is a right-aligned triangle pattern with 5 rows. Here's a breakdown of what the code does:
for (int i = 0; i < 5; ++i)
: This is the outer loop that controls the number of rows in the pattern. The loop iterates fromi = 0
toi = 4
, resulting in 5 rows.for (int j = 0; j < i; ++j)
: This is the inner loop that controls the number of asterisks on each row. For each rowi
, the loop iterates fromj = 0
toj = i - 1
.std::cout.put('*')
: Inside the inner loop, an asterisk (*) is printed to the console using thestd::cout.put
function. The*
character represents an asterisk.std::cout.put('\n')
: After the inner loop completes for a row, a newline character (\n) is printed to the console using thestd::cout.put
function. The\n
character moves the cursor to the next line, creating a new row.
As a result, this code produces the following 5-row triangle pattern:
*
**
***
****
*****
Source code in the cpp programming language
for(int i = 0; i < 5; ++i) {
for(int j = 0; j < i; ++j)
std::cout.put('*');
std::cout.put('\n');
}
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