Question

The following is a simple C++ program called “My First Program”. Explain the meaning on each line briefly.

#include using namespace std;
int main() {
// Display My First Program cout << "My First ";
cout << "Program";
cout << endl;
return 0; }

Answer 1

Step-by-step explanation:

This C++ program is a simple example of how to output text to the console.

Here is a brief explanation of each line:

#include: This is a preprocessor directive that tells the compiler to include a library or header file in the program. In this case, the iostream library is being included, which contains functions for input and output.

using namespace std: This line is using the namespace std, which is the standard namespace used in C++ programs. This allows us to use functions and objects defined in the std namespace without having to type out the namespace each time.

int main(): This is the main function of the program. It is the entry point of the program and where the execution of the program begins.

// Display My First Program: This is a single-line comment. It is used to document the code and is ignored by the compiler.

cout << "My First ";: This line uses the cout object to output the string "My First " to the console.

cout << "Program";: This line continues the previous line by outputting the string "Program" to the console.

cout << endl;: This line outputs a newline character to the console, which moves the cursor to the beginning of the next line.

return 0;: This line returns a value of 0 to the operating system, indicating that the program has executed successfully.