Answer:
Usually, a programming language is defined during the beginning so you know what to code in and what the program is used for (as well as to avoid confusion). Without knowing this, our best guess is either Java, Javascript, or C++. How do we derive this? Well, these 3 languages all use curly brackets in their code. All 3 look awfully similar to what you have shown in the picture.
Step-by-step explanation: