Using the $ character or the ${ } expression within single or double quotes we can convert a non-string value or an expression into string. When converting a single variable into string we will just prefix that variable with the $ sign. When converting an expression we will write it within the curly braces of ${ }.
void main()
{
var numA = 3;
var numB = 4;
print("$numA + $numB = ${numA+numB}");
}
The following video clip shows the execution of this code sample, overviews it and explains it.
