Q: – What are stdin, stdout, and stderr? In C, a file is treated as a series of bytes that is called file stream. stdin, stdout, and stderr are all pre-opened file streams. stdin is the standard input for reading; stdout is the standard output for writing; stderr is the standard error for outputting error messages. Q: – What value is yielded by a relational expression? A relational expression evaluates to either 0 or 1. If the relation indicated by a relational operator in an expression is true, the expression evaluates to 1; otherwise, the expression evaluates to 0. Q: … Click here to continue reading.