Chapter 5: Expressions and Control Structures

Taking decisions in code is an important aspect of a programming language, and Solidity should also be able to execute different instructions based on circumstances. Solidity provides the if...else statement for this purpose. It is also important to loop through multiple items, and Solidity provides multiple constructs such as for loops and while statements for this purpose. In this chapter, we will discuss in detail the programming constructs that will help you make decisions and loop through a set of values. The goal of this chapter is to understand the programming constructs and expressions available in Solidity, helping you to write functional smart contracts with loops and conditional statements.

This chapter covers the following topics:

• Understanding Solidity expressions
• The if...else statement
• Exploring the while loop
• Understanding the for loop
• Understanding the do while loop
• Understanding the break...