First C++ Program

Problem solving with C++

The basic tools for understanding the flow and the results of simple programs are execution sheetsAn execution sheet is a manual way for observing and updating the values of the variables at each step of a program’s execution. and flowchartsA flowchart is a diagram that helps understand the sequence of instructions in a program having decisions.. However, they become complicated when we have problems with a large number of decisions. Therefore, we provide executable embedded code widgets to observe the program output by executing it.

We can run a program as many times as we want to try out different inputs of variables. We can also edit these programs to observe the result of a change in a value or logic for our learning.

In C++, we use cin for input (to read a value from the user), and cout for print (to display a value on the screen as output).

Hello World

It’s time to write our first program in C++, which will display the message “Hello World!” on the screen.