How can I convert numbers to strings (the opposite of atoi)? Is there an itoa function?
Infrequently Asked Questions in comp.lang.cThere's frequently an itoa function. Better yet, write your own; it'll be good practice. On some implementations, (char *) x; will convert x to a string.
Related QuestionsHow do I convert strings to numbers?
Java FAQsYou can convert strings into numbers using the Integer, Float, Double and Long type wrapper classes as indicated by the following code snippet:
Related QuestionsLibrary FunctionsJust use sprintf: sprintf(string, "%d", number); (Don't worry that sprintf may be overkill, potentially wasting run time or code space; it works well in practice.) See also the examples in the answer to question 7.5a, and also questions 8.6 and 12.21. You can obviously use sprintf to convert long or floating-point numbers to strings as well (using %ld or %f); in other words, sprintf can also be thought of as the opposite of atol and atof.Related Questions
Library SubroutinesJust use sprintf. (You'll have to allocate space for the result somewhere anyway; see questions 3.1 and 3.2. Don't worry that sprintf may be overkill, potentially wasting run time or code space; it works well in practice.)Related Questions
What about strings?
faq/orderI typically use D'Addario J-46 (hard tension) or J-45 (medium tension) strings. String choice is highly personal. However, my guitars usually work best with medium or medium-hard tension strings. Too stiff and the sound is "choked". I set the intonation for medium to hard tension nylon strings. Savarez Alliance, and Hannabach or HenSe "carbons" will be slightly overcompensated with my normal setup, though you may not notice a difference.
Related QuestionsHow can I convert?
US to UK Moving FAQTo have a US item run under UK current you need to buy a transformer, a product that you plug into the wall and has a US-style jack at the other end. The transformer will "step down" in voltage from 240 to 120v. From there you may want to plug in a US-style power strip and provide current for sev eral products. Next you need to consider how many watts your transformer is providing (all transformers should clearly indicate this).
Related QuestionsHow serialize/unserialize simple types like numbers, characters, strings, etc.?
Serialization and Unserialization, C++ FAQ LiteThe answer depends on your decision regarding human-readable ("text") format vs. non-human-readable ("binary") format:
Related QuestionsHow do you convert numbers between different bases in JavaScript?
AKAAS :: JavaScript Interview Questions and Answers | JavaSc...Use the parseInt() function, that takes a string as the first parameter, and the base as a second parameter. So to convert hexadecimal 3F to decimal, use parseInt ("3F", 16);
Related QuestionsHow do you convert hexadecimal, binary, and decimal numbers?
Math Forum: Ask Dr. Math FAQ: Number BasesFirst, be sure you understand exactly what numbers mean in the old familiar decimal system. If I write 3409, what it really means is 3*1000 + 4*100 + 0*10 + 9*1... I can also write it as: 3*103 + 4*102 + 0101 + 9*100 (remember that 100 = 1). Now there's nothing magic about 10 - it was chosen because we happen to have 10 fingers. If humans had 7 fingers, you can bet that we'd be writing numbers like this: 3204 = 3*73 + 2*72 + 071 + 4*70.
Related QuestionsCan I pass strings of unicode instance to gtk or do I need to convert them to utf8?
PyGTK FAQ IndexI want to understand this "data" object that is used in the set_*_data() and get_*_data() calls.
Related QuestionsAPI I want to use requires descriptors, but I???ve used C strings. How do I convert between them?
Descriptors FAQQuite. Just about every Symbian OS C++ API you come across will use descriptors for transferring text and binary data somewhere, so if you???ve used C strings, you are going to have a problem using these APIs. You???ll have to do the conversion every time you want to use an API call requiring a descriptor, which is inefficient. So you might as well keep reading, and learn how to use descriptors correctly.
Related QuestionsHow do I use dice to create random strings of letters and numbers?
Diceware Passphrase FAQJust roll dice twice for each character and then use this table: First Roll 1 2 3 4 5 6 S 1 A B C D E F e 2 G H I J K L c 3 M N O P Q R o 4 S T U V W X n 5 Y Z 0 1 2 3 d 6 4 5 6 7 8 9 If you only want letters, roll the dice again when ever you get a digit. Each random letter adds 4.7 bits of entropy.
Related QuestionsIs there a simple way to convert from binary (base 2) numbers to hexadecimal (base 16) numbers?
Math Forum: Ask Dr. Math FAQ: Number BasesA big part of the reason that we use hexadecimal is that it is relatively easy to convert between binary and hexadecimal. Hexadecimal numbers are closely related to binary, but they are shorter and easier to read than binary. Group the binary digits into groups of 4 starting from the right...
Related QuestionsWhy do strings break?
Tennis Strings by Silent PartnerThe primary reason strings break is that "main" strings rub against "cross" strings when the ball is hit with spin. Gradually, this rubbing cuts a notch in the main string. When the notch gets deep enough the string cannot withstand the stretch caused by a strong shot, and it breaks. The thicker the string, the deeper the notch it will tolerate before breaking. That's why thicker strings last longer than thinner strings.
Related QuestionsAPI I want to use requires descriptors, but I've used C strings. How do I convert between them?
Descriptors FAQQuite. Just about every Symbian OS C++ API you come across will use descriptors for transferring text and binary data somewhere, so if you've used C strings, you are going to have a problem using these APIs. You'll have to do the conversion every time you want to use an API call requiring a descriptor, which is inefficient. So you might as well keep reading, and learn how to use descriptors correctly.
Related QuestionsWhile we are on the subject, how do I convert between the different lipid reporting numbers I see?
FAQsConverting cholesterol numbers between mmol/L and mg/dL works the same way. The factor for cholesterol, HDL and LDL is 38.67 and the factor for triglycerides is 88.54.
Related QuestionsHow do I convert report fields that display scientific notation in preview to standard numbers?
Frequently Asked Questions for Calibration Manager 2xTo translate Pre-Deviation and Post-Deviation measurement fields to a real number instead of Scientific Notation, create the following formulas: When inserting "PreDeviation", instead of Selecting Insert|Database Field to place the field on the report design, select Insert|Formula Field and insert "PreCal Dev to Number".
Related QuestionsHow do I convert the Motorola style Hex numbers to "Uniden" TrunkTracker style?
FAQIf you have Windows use the Scientific mode of the Windows Calculator. Put in the 3 digit Hex number in the Hex field, add a trailing 0, and then click the DEC button. If you have a 4 digit Hex number that ends in anything other than a 0 then change the last character to 0. The same works in reverse.
Related QuestionsCan you explain how to convert binary fractions to decimal numbers, e.g. 0.00011001100110011001...?
Math Forum: Ask Dr. Math FAQ: Number BasesHow do you convert numbers to base 16 numbers? Please use the following numbers in an example: 411213 and 38015. Here's one way to think about other bases. If you were given 3 hundred-dollar bills and 4 ten-dollar bills and 2 one-dollar bills you would have 342 dollars. We can just "glue" the 3 and the 4 and the 2 together because our decimal number system is based on tens.
Related QuestionsHow do I convert numbers from one base to another without converting to a base 10 equivalent first?
Math Forum: Ask Dr. Math FAQ: Number BasesGiven a binary number you start by grouping the binary "1" and "0" digits in groups of 3, starting at the right. Then convert each of these groups into one octal digit. In the base six number system, you would never use the numeral 7, only numerals from 0 to 5.
Related QuestionsHow do you convert very large binary numbers like 2^50 to base 10?
Math Forum: Ask Dr. Math FAQ: Number BasesThere are two basic methods for converting whole numbers from binary (or any other base) to base 10. Here are the two methods, used to convert the binary number 11001 to base 10... - Doctor Greenie In a parallel universe, the numbering system in use is based on the 26-character Roman alphabet. A is the number ), B is the number 1, C is the number 2, and so on, through Z is the number 25... This problem revolves around an understanding how different bases work..
Related QuestionsWhat are those numbers I have to type in?
Free file hosting and image hosting - BADONGOIn order to protect ourselves from automated downloads and the draining of our resources we have implemented a Word confirmation System (commonly known as a CAPTCHA) We know this can be annoying, however we are forced to implement such security measures in order to keep our servers running smoothly and available to you.
Related QuestionsWhere do I put my registration numbers?
Hardline Products - Frequently Asked QuestionsThe law mandates that your registration numbers must be on the forward half of the vessel above the waterline in colors contrasting with the background of the application area.
Related QuestionsHow do exits get their numbers?
misc.transport.road FAQMost places number interchanges to the nearest milepost/kilometerpost. Some (in the U.S. and Canada: New England; NY; DE; some non-Interstates in FL; NS; and some other states' toll highways) number their exits consecutively (1, 2, 3...). CA formerly didn't number exits at all, except for some instances on freeways in Los Angeles, which were numbered by mile, apparently an isolated Caltrans experiment. Now exits on all state-maintained freeways will be numbered by mile (see http://www.dot.ca.
Related QuestionsWhat kind of call numbers are these anyway?
GSCC Libraries FAQThe GSCC Libraries use Library of Congress call numbers. Each call number is a combination of 1 or 2 letters and up to 4 numbers. Then comes the decimal point and more letters and numbers. A good explanation for finding books using the call numbers is at http://www.hcc.hawaii.edu/education/hcc/library/callno.html.
Related QuestionsHow do I round numbers?
Infrequently Asked Questions in comp.lang.cMultiply by 10. Numerical Recipies in C has a section on this, but there's reputedly a bug in their algorithm.
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