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ans =3.14159e+100Some additional text can be mixed with the numerical conversion, forexample:>> num2str(pi,’Pi has a value <strong>of</strong> %12.5e, or thereabouts.’)ans =Pi has a value <strong>of</strong> 3.14159e+00, or thereabouts.The online help 9 entry for the sprintf comm<strong>and</strong> gives a full description<strong>of</strong> how to use the various formatting options. (The sprintf comm<strong>and</strong>is the matlab version <strong>of</strong> the C language comm<strong>and</strong> <strong>of</strong> the same name.)The following table is taken from the online help.%c Single character%d Decimal notation (signed)%e Exponential notation (using a lowercase e as in 3.1415e+00)%E Exponential notation (using an uppercase E as in 3.1415E+00)%f Fixed-point notation%g The more compact <strong>of</strong> %e or %f. Insignificant zeros do not print.%G Same as %g, but using an uppercase E%o Octal notation (unsigned)%s String <strong>of</strong> characters%u Decimal notation (unsigned)%x Hexadecimal notation (using lowercase letters a-f)%X Hexadecimal notation (using uppercase letters A-F)To further control the formatting, other characters can be insertedinto the conversion specifier between the % <strong>and</strong> the conversion character:CharacterA minus sign (-)A plus sign (+)Zero (0)Digits (field width)Digits (precision)What it doesLeft-justifies the converted argument in itsfield.Always prints a sign character (+ or −).Pads with zeros rather than spaces.Specifies the minimum number <strong>of</strong> digits to beprinted.Specifies the number <strong>of</strong> digits to be printed tothe right <strong>of</strong> the decimal point.9 Type helpdesk at the comm<strong>and</strong> line to get hypertext help.c○ 2000 by CRC Press LLC
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