Quantum Computing – The Next Tech Revolution Technology has evolved rapidly over the last few decades—from bulky mainframe computers to powerful smartphones in our pockets. Yet, despite these advances, traditional computers are approaching their physical limits. This is where quantum computing enters the scene, promising to revolutionize the way we process information and solve complex problems. What Is Quantum Computing? Quantum computing is a new paradigm of computing that uses the principles of quantum mechanics, a branch of physics that explains how matter and energy behave at the smallest scales. Unlike classical computers, which use bits that represent either 0 or 1, quantum computers use qubits. Qubits can exist in multiple states simultaneously, thanks to a property called superposition. Additionally, qubits can be interconnected through entanglement, allowing them to share information instantaneously. These unique properties give quantum computers immense computational power....
FUNCTIONS
C enables its programmers to break up a program into segments commonly known as functions, each of which can be written more or less independently of the others. Every function in the program is supposed to perform a well-defined task. Therefore, the program code of one function
is completely insulated from the other functions.
Every function interfaces to the outside world in terms of how information is transferred to it and how results generated by the function are transmitted back from it. This interface is basically specified by the function name. For example, look
at below figure which explains how the main() function calls another function to perform a well-defined task.
In the figure, we can see that main() calls a function named func1(). Therefore, main() is known as the calling function and func1() is known as the called function. The moment the compiler
encounters a function call, the control jumps to the statements that are a part of the called function.
After the called function is executed, the control is returned to the calling program.
The main() function can call as many functions as it wants and as many times as it wants. For example, a function call placed within a for loop, while loop, or do–while loop may call the same function multiple times till the condition holds true.
Not only main(), any function can call any other function. For example, look at below figure which shows one function calling another, and the other function in turn calling some other function.
