Lesson 2: Running your App
In the previous lesson, you created an Android project that displays "Hello World." You can now run the app on a real device or on an
In the previous lesson, you created an Android project that displays "Hello World." You can now run the app on a real device or on an
This lesson shows you how to create a new Android project with Android Studio and describes some of the files in the project. In Android Studio, create a
The do.... while loop checks its condition at the bottom of the loop. A do.... while loop is similar to a while loop. The one difference is that
A for loop is a repetition control structure that allows you to efficiently write a loop that executes a specific number of times. Syntax: for(init;condition;increment
Loops: A loop repeatedly executes a set of statements until a particular condition is satisfied. A while loop statement repeatedly executes a target statement as long as a
Nested if statements: You can also include, or nest, if statements within another if statement. For example: int mark = 100; if (mark >= 50) { cout << "
Additional relational operators: Operator Description Example == Equal to 4==2 False <= Less than or equal to 4<=2 False >= Greater than or equal to 4&
Else statement: An if statement can be followed by an optional else statement, which executes when the condition is false. Syntax: if(condition) { //statements } else { //statements } The compiler
Decision Making: The if statement is used to execute some code if a condition is true. Syntax: if(condition) { //statements } The condition specifies which expression is to be
Assignment Operator: The simple assignment operator (=) assigns the right side to left side. C++ provides shorthand operators that have the capability of performing an operation and an assignment
Arithmetic Operators: C++ supports these arithmetic operator. Operator Symbol Form Addition + x+y Subtraction - x-y Multiplication * x*y Division / x/y Modulus % x%y Addition: The addition
User input: To enable the user to to input a value,use cin in combination with the extraction operator (>>). The variable containing the extracted data follows
Write a program in C++ to print a massage on output screen. #include<iostream> using namespace std; int main() { cout<<"Hello world"
Creating a variable reserves a memory location, or a space in memory for storing values. The compiler requires that you provide a data type for each variable you
Comments are explanatory statements that you can include in C++ code to explain what the code is doing. The compiler ignores everything that appears in the comment,so