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In this chapter we will discuss various types of decision making statement like the below.

Serial No	Decision Making
1	if statement
2	if else statement
3	if else ladder
4	switch statement

How do you use control structures such as if-else and loops in X++?

In X++, you use control structures such as if-else and loops to control the flow of execution in your code.

The if-else statement is used to perform different actions based on different conditions. Here's an example of how you might use an if-else statement to check the value of a variable and print a message based on that value:

int x = 5;
if (x > 10)
{
    info("x is greater than 10");
}
else
{
    info("x is less than or equal to 10");
}

The for loop is used to execute a block of code a specific number of times. Here's an example of how you might use a for loop to print the numbers from 1 to 10:

for (int i = 1; i <= 10; i++)
{
    info(int2str(i));
}

The while loop is used to execute a block of code repeatedly as long as the specified condition is true. Here's an example of how you might use a while loop to print the numbers from 1 to 10:

int i = 1;
while (i <= 10)
{
    info(int2str(i));
    i++;
}

The do-while loop is similar to the while loop, but it will execute the code block at least once, regardless of the test condition being true or false. Here's an example of how you might use a do-while loop to print the numbers from 1 to 10:

int i = 1;
do
{
    info(int2str(i));
    i++;
} while (i <= 10);

It's important to keep in mind that, when using control structures like loops, it's important to ensure that the loop will eventually end, otherwise the loop will continue indefinitely and cause an infinite loop, which can cause the program to crash or consume excessive resources. This can be achieved by using a counter variable or a boolean flag that gets updated inside the loop, and it will be used to check the condition for exiting the loop.

It's also important to consider the performance and memory usage of your code when using loops, especially when working with large data sets or when performing complex operations.

Additionally, it's a good practice to use meaningful and descriptive variable names, that indicate the purpose of the variable, this will help you to maintain and understand your code better. Also, it's important to follow a consistent naming convention throughout your codebase, this will make it easier for other developers to understand and work with your code.

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