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Full Discussion: C++ program help
Top Forums Programming C++ program help Post 302256639 by rushhour on Monday 10th of November 2008 09:50:16 AM
Old 11-10-2008
C++ program help

Hi I was wondering if i can get a little help with constructing a particular program please.

The program has the following specifications:

Input One integer, read from standard input, representing the deposit, in pounds. The following prompt should be displayed before the deposit is read in: Deposit:
Data validation If the data entered by the user falls into one of the following categories, the corresponding error message should be displayed on the standard error stream and the program should terminate, returning a status value of 1 by means of a call to exit().
Non-integer data Error: deposit must be a whole number of pounds Less than 10,000 Error: minimum deposit 10,000 More than 250,000 Error: maximum deposit 250,000
Output The interest rate applied to the deposit and the amount of interest payable, in the following format:
Rate = 3.16
Interest = 1974.96
I don't need it to be too complex, i just need a little help as to how to approach this. a starting point would be great help. Thanks in advance.
 

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newform(1)							   User Commands							newform(1)

NAME
newform - change the format of a text file SYNOPSIS
newform [-s] [-itabspec] [-otabspec] [-bn] [-en] [-pn] [-an] [-f] [-cchar] [-ln] [filename]... DESCRIPTION
newform reads lines from the named filenames, or the standard input if no input file is named, and reproduces the lines on the standard output. Lines are reformatted in accordance with command line options in effect. Except for -s, command line options may appear in any order, may be repeated, and may be intermingled with the optional filenames. Command line options are processed in the order specified. This means that option sequences like ``-e15 -l60'' will yield results different from ``-l60 -e15''. Options are applied to all filenames on the command line. OPTIONS
The following options are supported: -s Shears off leading characters on each line up to the first tab and places up to 8 of the sheared characters at the end of the line. If more than 8 characters (not counting the first tab) are sheared, the eighth character is replaced by a * and any characters to the right of it are discarded. The first tab is always discarded. An error message and program exit will occur if this option is used on a file without a tab on each line. The characters sheared off are saved internally until all other options specified are applied to that line. The characters are then added at the end of the processed line. For example, to convert a file with leading digits, one or more tabs, and text on each line, to a file beginning with the text, all tabs after the first expanded to spaces, padded with spaces out to column 72 (or truncated to column 72), and the leading digits placed starting at column 73, the command would be: newform -s -i -l -a -e filename -itabspec Input tab specification: expands tabs to spaces, according to the tab specifications given. Tabspec recognizes all tab speci- fication forms described in tabs(1). In addition, tabspec may be -, in which newform assumes that the tab specification is to be found in the first line read from the standard input (see fspec(4)). If no tabspec is given, tabspec defaults to -8. A tabspec of -0 expects no tabs; if any are found, they are treated as -1. -otabspec Output tab specification: replaces spaces by tabs, according to the tab specifications given. The tab specifications are the same as for -itabspec. If no tabspec is given, tabspec defaults to -8. A tabspec of -0 means that no spaces will be converted to tabs on output. -bn Truncate n characters from the beginning of the line when the line length is greater than the effective line length (see -ln). Default is to truncate the number of characters necessary to obtain the effective line length. The default value is used when -b with no n is used. This option can be used to delete the sequence numbers from a COBOL program as follows: newform -l1 -b7 filename -en Same as -bn except that characters are truncated from the end of the line. -pn Prefix n characters (see -cchar) to the beginning of a line when the line length is less than the effective line length. Default is to prefix the number of characters necessary to obtain the effective line length. -an Same as -pn except characters are appended to the end of a line. -f Write the tab specification format line on the standard output before any other lines are output. The tab specification for- mat line which is printed will correspond to the format specified in the last -o option. If no -o option is specified, the line which is printed will contain the default specification of -8. -cchar Change the prefix/append character to char. Default character for char is a space. -ln Set the effective line length to n characters. If n is not entered, -l defaults to 72. The default line length without the -l option is 80 characters. Note: Tabs and backspaces are considered to be one character (use -i to expand tabs to spaces). The -l1 must be used to set the effective line length shorter than any existing line in the file so that the -b option is activated. OPERANDS
The following operand is supported: filename Input file EXIT STATUS
The following exit values are returned: 0 Successful operation. 1 Operation failed. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------------------------------------+ |ATTRIBUTE TYPE ATTRIBUTE VALUE | |Availability SUNWesu | +-----------------------------------------------------------+ SEE ALSO
csplit(1), tabs(1), fspec(4), attributes(5) DIAGNOSTICS
All diagnostics are fatal. usage: ... newform was called with a bad option. "not -s format" There was no tab on one line. "can't open file" Self-explanatory. "internal line too long" A line exceeds 512 characters after being expanded in the internal work buffer. "tabspec in error" A tab specification is incorrectly formatted, or specified tab stops are not ascending. "tabspec indirection illegal" A tabspec read from a file (or standard input) may not contain a tabspec referencing another file (or standard input). NOTES
newform normally only keeps track of physical characters; however, for the -i and -o options, newform will keep track of backspaces in order to line up tabs in the appropriate logical columns. newform will not prompt the user if a tabspec is to be read from the standard input (by use of -i- or -o-). If the -f option is used, and the last -o option specified was -o-, and was preceded by either a -o- or a -i-, the tab specification format line will be incorrect. SunOS 5.11 21 Jul 1997 newform(1)
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