In practical engineering (on circuit diagrams, bills of materials, etc), you almost never see the "Ω" symbol. "K" is used for kΩ, "M" for MΩ, and "R" for Ω (as

In practical engineering (on circuit diagrams, bills of materials, etc), you almost never see the "Ω" symbol. "K" is used for kΩ, "M" for MΩ, and "R" for Ω (as in 330R is a 330Ω resistor). It's nothing to do with programming language design.