Variables are the names of storage locations that store data of different types upon execution of a code block.
The variable declaration tells a compiler that a named variable exists with a given data type. This only holds only at the time of code compilation. Variable declaration involves the defining and initializing of a variable.
Let’s look at the code below:
import std.stdio; /* variable definition: */ int w, x; int y; int main () { /* Variable Initialization */ w = 30; x = 40; y = x + w; writeln("Value of y is : ", y); return 0; }
From the code above, we add the values of two variables:
Lines 3 and 4: We define all the variables we use.
Lines 12 to 14: We initialize our variables by assigning values to them.
Line 15: We print the summation of variable x
and variable y
.
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