Input/output statement

Input/Output statements may be either list-directed (stream) or formatted. List-directed I/O statements may be... 

Input/Output statements—Two boolean functions that are useful in input processing are EOF, which is TRUE if the pointer is currently at the end of the input file and FALSE otherwise, and EOLN, which is TRUE if the pointer is at the end of the current input line and FALSE otherwise. 

If no other files are specified for input or output in the program heading, the default files or devices (usually the keyboard and the printer or the screen) are used. If other (declared) files are to be used, they must be prepared (see file handling statements) and then specified in the input/output statements, as follows... 

The procedure illustrated here, besides containing only trivial technical calculations, lacks important features that are required in production programs. Extensive error checking and recovery must be performed. The procedure must detect the occurrence of a self-referential system of formulas, which would result in attempting endless recursive calls. Access to multiple raw material and formula databases adds power to the program, but must be implemented by complex code to allow flexible control of that access. The structural and input/output statements to support these features may greatly exceed the number of statements that perform modelling calculations. 

Input-output statements are methods of getting your data into the computer and retrieving data from the computer. The common method of introducing data from the... 

These statements may be abbreviated by the statement Input — output -t- produc tion = accumulation... 

In the previous chapters, thermodynamic analysis is used to improve processes. However, as pointed out in Chapter 9 (Energy Conversion), the exergy analysis did not make any distinction between the combustion of coal and natural gas and, as a result, could not make any statements regarding toxicity or environmental impact of exploration, production and use of the two fuels. A technique that can do this is LCA. What exactly is life cycle analysis In ISO 14040 [1], life cycle analysis (or life cycle assessment) is defined as "the compilation and evaluation of the inputs, outputs and potential environmental impacts of a product throughout its life cycle."... 

Most of the Mathematica symbols are the same as those used in Excel or various computer programming languages such as BASIC except for the use of a blank space for multiplication. Excel and BASIC use only the asterisk for multiplication. In ordinary formulas, placing two symbols together without a space between them can stand for multiplication. In Mathematica, if you write xy, the software will think you mean a variable called xy, and not the product of x and y. However, you can write either 2x or 2 x for 2 times x, but not x2. It is probably best to use the asterisk ( ) for multiplication rather than a space in input statements. Watch for the use of the blank space in output statements. Complex arithmetic is done automatically, using the capital letter I for. Several constants are available by using symbols Pi, E, I, Infinity, and Degree stand for n,e,i =, oo, and... 

Mathematica can carry out indefinite integrals symbolically. For example, the input and output statements for the indefinite integral of sin(x) are In[l] =Clear[x]... 

Unlike most modem computer programs, the Herman-Skillman code, written in the FORTRAN language, uses formatted input and output statements. Thus the white spaces in the text lines of input count to separate each input parameter. 

The DATATRAN application language processor operates within the SCOPE operating system on the CDC 6600 and 7600 machines. It consists of six major components, each designed to perform a specific data management or executive system function all are written primarily in FORTRAN, but rely on assembly language routines for character manipulation and efficient input-output operations. The components and their associated system functions are the precompiler which scans each statement in the DATA-TRAN input stream and translates it, if necessary, into an acceptable FORTRAN statement the interpreter which contains the run-time routines to execute the DATATRAN statements, creates and maintains the system s... 

An important use of fuzzy methods for Data Mining is for classification. Associations between inputs and outputs are known in fuzzy systems as fuzzy associative memories or FAMs. A FAM system encodes a collection of compound rules that associate multiple input statements with multiple output statements We combine such multiple statements using logical operators such as conjunction, disjunction and negation. 

In this case it is not necessary to do a graphical representation of the problem statement, but we need a mathematical formulation. The objective should be to maximize company profits, where we can define the profits (U) as follows Profits = input — output. Therefore, we can write U = PQ — CQ. 

The total mass balance is trivial. With no input, output, generation, or consumption there is no accumulation. What we seek, however, is a conservation statement for the nitrous oxide inside the reactor. Thus we choose the reactor as the system boundaries and consider only the mass of nitrous oxide. There is neither input nor output of N2O. The chemical reaction given by Eq. (6.64) tells us, however, that nitrous oxide is consumed by the reaction to produce nitrogen and oxygen. Thus we have... 

Write a script M-file that takes the radius r and returns the area of a circle (nr ). Make sure that your code works for variables that are scalars, vectors, and matrices. Use the proper input statement to enter the radius and output statement to print out the area of a circle. 

Mathematica can also carry out definite integrals. Definite integrals are obtained by adding the limits to the input entry, enclosed in curly brackets. To obtain the definite integral of sin (x) from x = 0 to x = r, the input and output statements are... 

This type of operation allows the process to obtain the most up to date information on plant status before execution of statements dependent on that information. The input/output data operations execute synchronously with the process code i.e. the process requests the information and waits for its return. On its return the process uses the data to complete its calculations. Using such a mechanism does not of course guarantee that the process executes synchronously with the plant. In a multitasking environment the time... 

Before writing a first M-file program, input/output with the command window must be covered. For MATLAB programs with small amounts of input, the input statement is used. For output to the Command Window, the usual method involves the fprintf statement. The syntax of the input statement is... 

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