1. What is C language? Discuss its features and applications. 2. Explain the structure of a C program with an example. 3. What are variables in C? Explain the rules for naming va... 1. What is C language? Discuss its features and applications. 2. Explain the structure of a C program with an example. 3. What are variables in C? Explain the rules for naming variables. 4. What is the difference between local and global variables in C? 5. Explain the different data types available in C with examples. 6. What are operators in C? Discuss various types of operators with examples. 7. What is a control structure? Explain the 'if-else' and 'switch' statements with examples. 8. What are loops in C? Discuss the 'for', 'while', and 'do-while' loops with examples. 9. What is an array? Explain the difference between one-dimensional and multi-dimensional arrays. 10. Define functions in C. Explain the difference between built-in and user-defined functions. 11. What is a pointer? Explain the use of pointers with an example. 12. What is the difference between 'call by value' and 'call by reference' in C? 13. What are storage classes in C? Explain with examples. 14. What is a file in C? Explain file handling operations like reading and writing data to files. 15. Discuss the use and importance of preprocessor directives in C, such as #define and #include.
Understand the Problem
The questions are asking about various fundamental concepts of the C programming language, including its features, program structure, variables, data types, control structures, loops, functions, pointers, storage classes, file handling, and preprocessor directives. They require detailed explanations and examples.
Answer
Variables in C are named storage locations used to hold data values. They must start with a letter or underscore, are case-sensitive, and cannot be a keyword.
A variable in C is a named storage location in memory used to hold a data value. There are several naming rules for variables: names must begin with a letter or underscore, are case-sensitive, and cannot be a keyword or contain spaces.
Answer for screen readers
A variable in C is a named storage location in memory used to hold a data value. There are several naming rules for variables: names must begin with a letter or underscore, are case-sensitive, and cannot be a keyword or contain spaces.
More Information
In C, variables help manage data by storing it in memory with a specific name, ensuring it can be accessed and manipulated as needed. The naming rules help prevent errors and ensure code clarity.
Tips
A common mistake is forgetting that variable names are case-sensitive, which can lead to confusing errors if two variables with similar names are mistakenly considered the same.
Sources
- C Variables - GeeksforGeeks - geeksforgeeks.org
- C Variables - W3Schools - w3schools.com
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