She looked at him curiously - at his ugly tweed suit, his yellow boots, and up into the strong, forceful face with eyes set in deep hollows under his protruding brows, at the heavy jaws giving a certain coarseness to his expression, which his mouth and forehead, well-shaped though they were, could not altogether dispel.
Definition of Expression. An Expression is a mathematical phrase that combines numbers and/or variables using mathematical operations. An expression is a representation of a value; for example, variables and/or numerals that appear alone or in combination with operators are expressions.
Definition: An expression is a statement that has a value. In C, C++ and C# . An expression is always inside brackets like these examples.The last example isn't a mistake. It is an assignment statement, setting c to 1.n expression is a statement that has a value. In C, C++ and C# . An expression is always inside brackets like these examples. The last example isn't a mistake. It is an assignment statement, setting c to 1.