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So, an integer variable is a scalar value. This means that you can have any integer inside of it that you want. Scalar generally means one-dimensional, so it can be any number on that dimension, like the number line.
R-value (insulation) The R-value is a measure of thermal resistance, or ability of heat to transfer from hot to cold, through materials (such as insulation) and assemblies of materials (such as walls and floors). The higher the R-value, the more a material prevents heat transfer.