Functions with no Arguments with Return Values

• Nesting of functions in C refers to the practice of calling one function from within another function.
• This allows for a modular and organized way of structuring code, as functions can be reused and composed to perform more complex tasks.
• Syntax:
  return_type function1(parameters1) {
  // Function1 code
  return_type function2(parameters2) {
  // Function2 code
  }
  // Function1 code continued
  }
  
• Organization: Nesting functions helps in organizing code by breaking down a complex task into smaller, more manageable sub-tasks.
• Reusability: Functions can be reused in different contexts, promoting a modular and maintainable code structure.
• Readability: Nesting functions can enhance code readability by encapsulating related functionality within their own scopes.
• Scope: Each nested function has its own scope, preventing naming conflicts with variables from other functions.
• Encapsulation: Functions can be encapsulated within each other, hiding their implementation details and exposing only the necessary interface.
• Parameter Passing: Parameters can be passed between nested functions, allowing for the flow of data and information.
• Error Isolation: Nesting functions helps in isolating errors to specific sections of code, making debugging more manageable.
• Complex Task Decomposition: Nesting allows the decomposition of a complex task into a series of simpler, more focused sub-tasks.
Program.c
#include <stdio.h> // Outer function void outerFunction() { printf("This is the outer function.\n"); // Inner function void innerFunction() { printf("This is the inner function.\n"); } innerFunction(); // Call the inner function } int main() { printf("Nesting Functions in C\n"); outerFunction(); // Call the outer function return 0; }

Output:
Nesting Functions in C
This is the outer function.
This is the inner function.