Question 11:
What is the purpose of the goto statement in C, and why is it rarely used?
The goto statement in C allows for transferring control to a labeled statement within the same function. It is rarely used due to its potential to create complex and hard-to-follow code structures, making debugging and maintenance difficult.
Question 12:
Explain the process of defining a function in C, including its syntax and components.
In C, a function definition consists of a return type, function name, parameter list (optional), and function body enclosed within curly braces. Example:
int add(int x, int y)
{
return x + y;
}
Question 13:
What is a function declaration in C, and why is it necessary?
A function declaration in C specifies the return type and parameters of
a function without providing its implementation. It informs the
compiler about the existence of the function, allowing the compiler to
perform type checking and generate appropriate function call code.
Question 14:
Explain the purpose and syntax of function prototypes in C, providing an example.
A function prototype in C declares the function's name, return type, and parameters without providing the function body. It allows functions to be defined later in the code or in separate files. Example: int add(int x, int y);
Question 15:
Discuss the significance of function parameters in C, including their role and types.
Function parameters in C are variables declared in the function's
parameter list. They allow data to be passed into a function for
processing. Parameters can be of various types, including int, float,
char, pointers, or user-defined types.
Question 16:
Explain the purpose of the return statement in C functions, and provide an example.
The return statement in C functions is used to exit the function and optionally return a value to the calling code.
Example: int add(int x, int y) { return x + y; }
Question 17:
What is recursion in C programming, and how does it differ from iterative approaches?
Recursion in C is a programming technique where a function calls itself to solve a problem. It differs from iterative approaches in that it solves problems by breaking them down into smaller, similar subproblems, often leading to concise and elegant solutions.
Question 18:
Explain the concept of scope of variables in C functions, including global and local variables.
The scope of a variable in C refers to the region of the program where the variable is accessible. Global variables are declared outside any function and are accessible throughout the program. Local variables are declared within a function and are only accessible within that function.
Question 19:
What is recursion in programming, and how does it differ from iterative solutions?
Recursion is a programming technique where a function calls itself directly or indirectly to solve a problem. It provides an elegant solution to certain problems but may consume more memory compared to iterative solutions.
Question 20:
Explain the concept of scope in C programming, and discuss the different types of variable scopes.
Scope refers to the visibility and lifetime of variables within a program. In C, variables can have either global or local scope. Global variables are accessible throughout the entire program, while local variables are limited to the block or function in which they are defined.
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