Answer:
the mistake that was made by allen is that he was not suppose to hire a highly proficient technician to install the heating and cooling system in the granary.
Firstly we explain the variable and the declaration rule for the variable and further separating the valid and invalid variables.
- Whenever a user is given a question, variables are data values that can vary. for example age, CSL, etc.
- It may alter and during the execution of the program.
- It's a storage space for memories.
- It has a name that corresponds to the location.
- Data is stored in the memory location.
The rule for variable declaration:
- The names of your variables should be based on the phrases used in the subject area, and they should reflect the variable's function.
- By removing spaces between the words, you can make variable names. Each word in the name should be capitalized, including prepositions and pronouns that are one letter long.
- An underscore should never be used to start a variable name.
- Single-character variable names should be avoided. For loop counters, only short variable names are permitted.
- After the state that equals the "true" value, name variables that describe binary states ("true" or "false").
The valid variable is:
CSL, Age,CLS,SEE,Stop5for,Give, $shopping, and United.
The invalid variable is:
Mark-sheet, Tel $, Simple Interest, and 545Newton.
Learn more:
brainly.com/question/2684763
Answer:
Explanation:
An operating system is the most important software that runs on a computer. ... It also allows you to communicate with the computer without knowing how to speak the computer's language. Without an operating system, a computer is useless.
