C and C++

In C++, the <cstdio> header provides support for input and output operations using C-style functions.

#include <cstdio>

printf("Hello, World! Number: %d\n", 42);  // Prints: Hello, World! Number: 42

The functions rely heavily on format specifiers (e.g., %d for integers, %s for strings), which can lead to bugs if not used carefully.

For modern C++ development, prefer <iostream> over <cstdio> for safety and maintainability.

When the main function in C++ completes, it returns an integer value to the operating system. If you include return 0; at the end of the main function, it signifies successful execution.

In C language, \n is a special escape sequence that represents a newline character.

In C++ language, an argument is a value or variable that you pass to a function when you call it. Arguments act as input data that the function uses to perform its operations.

In C++, char* is a pointer to a char type, and it is used to represent a character array or C-style string. 

In C++, argc is a parameter of the main function that stands for "argument count." It represents the number of command-line arguments passed to the program when it is executed.

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