Category: C Tutorial

1. What is a Callback Function? A callback function is a function passed as an argument to another function. The receiving function can call the passed function at a specific point. Enables dynamic behavior...

1. What is a Function Pointer? A function pointer is a pointer that points to the address of a function instead of a variable. It allows you to call a function indirectly and is...

1. What is Recursion? Recursion occurs when a function calls itself directly or indirectly. Useful for problems that can be broken down into smaller, similar sub-problems. Every recursive function must have a base case...

1. What is an Inline Function? An inline function suggests to the compiler to replace the function call with the function code itself. This can reduce function call overhead and increase performance for small...

1. Include the Math Library To use math functions, include: #include <math.h> Some functions return double, so you may need %lf in printf. 2. Common C Math Functions Function Description Example sqrt(x) Returns square...

1. What is Function Declaration? A function declaration (also called prototype) tells the compiler about a function’s name, return type, and parameters before its actual definition. It does not contain the function body. Helps...

1. What is Variable Scope? Scope defines the region of a program where a variable can be accessed or modified. Variables in C can be local, global, or static, each with different visibility. 2....

1. What are Function Parameters? Function parameters are values you pass to a function to use inside it. Parameters allow a function to work on different data each time it’s called. Syntax: return_type function_name(data_type...

1. What is a Function in C? A function is a block of code that performs a specific task. Helps in code reusability, modularity, and readability. Functions are called when needed instead of writing...

1. What is a Pointer to Pointer? A pointer to pointer points to a pointer variable, which in turn points to another variable. It’s like two levels of indirection: variable -> value pointer ->...