You declare a variable when you create it by specifying its datatype and name in a programming language. This tells the compiler or interpreter to allocate memory for the variable. Variables must be declared before they can be used in most programming languages.
The Independent/Manipulative variable is the variable that you purposely change, and the Dependent/Responsive variable is the variable that changes as a rest of the Independent variable. You measure the dependent variable to see the effects of the Independent variable.
An independent variable is the variable that causes a change in another variable, known as the dependent variable. The independent variable is manipulated or controlled in an experiment to observe its effect on the dependent variable.
The variable that is used to predict another variable is usually called the "independent variable" or the "predictor variable." This variable is manipulated or controlled in an experiment to observe its effect on the outcome variable, which is known as the "dependent variable."
A variable that causes a change in another variable is called an independent variable. This variable is manipulated or controlled by the researcher to observe its effect on the dependent variable.
The independent variable is the variable that is changed or manipulated by the researcher and is hypothesized to cause an effect on the dependent variable. The dependent variable is the variable that is measured in response to the changes in the independent variable.
no it is not possible
datatype variable name;
A variable declaration is a math or programming term. A variable is an unnamed component. In the problem the wording will declare what the value of the variable is.
you have to give a statement in the following syntax datatype variable;
To declare a double precision variable in Fortran, you can use the "real(kind8)" declaration. This specifies that the variable should be of double precision, which is typically 8 bytes in size.
Yes.
no
yes
variable exit within a function and curly braces is local variable int main() { int x; }
It is not necessary to to declare variables inside the function in C. If you declare a variable inside a function, the variable becomes local for the function and another variable of same name can be declared in any other function, but you can not use the variable declared in other function. When you declare any variable outside the function body then the variable becomes global and can be used in any function of the program. Note: errno is an example for a variable declared outside any function.
Yes.
Depends on the programming language you are using. I will give two simple examples. In Command Prompt and when creating a batch file, you declare a variable by entering the "set" command. You can use different switches to change the type of variable you are declaring. /p makes the variable able to accept user input. /a makes the variable a numerical expression. In Python, you declare a variable just by stating the name of the variable and its value. x = value.