Qbasic for Students

Designed for a first course in programming, this text assumes a problem-solving approach to QBASIC programming concepts. Each chapter begins with a problem statement; concepts for solving the problem follow. A structured, seven-step procedure is used throughout the text and provides a framework for solving problems. The seven steps include: variable names; algorithm; hand-calculated answer; QBASIC program; entering the program; executing the program; comparing hand-calculated answer. Each chapter includes objectives, extensive screen displays, example programs with explanations and a summary of new QBASIC statements. Each chapter ends with a chapter review, summary, key terms, a self-check and a programming assignment. Because QBASIC is part of the Microsoft DOS 5.0 and 6.0 operating systems, students will not need to purchase software to use this text. There is also an instructor's manual set which includes an instructor's solutions disk, 3.5" IBM.

Table of Contents:
Part 1 An introduction to personal computers and QBASIC: the components of a computer system - hardware, software, programming languages ad QBASIC; the QBASIC environment - the QBASIC screen, using menus and dialog boxes, the run menu, editing the program, the file menu. Part 2 Structured programming and QBASIC: a structured approach to programming - a program that calculates a paycheck (example 1), problem statement, correcting errors - syntax errors, errors found during execution, logic errors, using QBASIC's Help System; the Let Statement - additional arithmetic operations, hierarchy of operations, use of parentheses, a program that used exponentiation (example 2), reviewing the seven-step procedure, programming assignments. Part 3 Strings, input and printing: string variables - using string variables; the input statement - inputting string variables; more about printing - the LPrint statement, more about the print and LPrint statements; advanced printing - the Tab and SPC functions, the print-using and LPrint-using statements, printing headings; the QBasic environment - the edit menu, the search menu. Part 4 Repetition: conditions - using string variables in conditions; the DO...Loop statement - DO WHILE Loops, DO UNTIL Loops, conditions on the Loop statement, payroll for more than one employee (example 1), using trailer data to stop execution (example 2); the read and data statements - payroll and totals using read and data, more about the read and data statements, the Restore statement; the QBASIC environment - advanced debugging tools, nested Loops (calculating ozone loss). Part 5 Decisions: the IF statement - a sales problem with a decision (example 1), other price schedules; nested IF statements - finding the largest of three numbers (example 2), logical operators; multiple-alternative decisions - an automobile insurance premium problem (example 3); the select case statement - a sales commission problem (example 4); syntax of the select case statement. Part 6 Procedures. (Part contents).