Fzu 1840 lexical translator for Java and C ++

Document directory

• Description
• Input
• Output
• Sample Input
• Sample output

Lexical translator for Java and C ++

Time Limit: 1 s	Memory limit: 32 m
Accepted submit: 11	Total submit: 38

Description Apologists of Java and C ++ can argue for hours proving each other that their programming language is the best one. java people will tell that their programs are clearer and less prone to errors, while C ++ people will laugh at their inability to instantiate an array of generics or tell them that their programs are slow and have long source code. Another issue that Java and C ++ people coshould never agree on is identifier naming. in Java A multiword identifier is constructed in the following manner: the first word is written starting from the small letter, and the following ones are written starting from the capital letter, no separators are used. all other letters are small. examples of a Java identifier arejavaIdentifier,longAndMnemonicIdentifier,name,OpenSolaris. Unlike them, C ++ people use only small letters in their identifiers. To separate words they use underscore character'_'. Examples of C ++ identifiers arec_identifier,long_and_mnemonic_identifier,name(You see that when there is just one word Java and C ++ people agree ),open_solaris. You are writing a translator that is intended to translate C ++ programs to Java and vice versa. of course, identifiers in the translated program must be formatted due to its language rules-otherwise people will never like your translator. The first thing you wowould like to write is an identifier Translation Routine. given an identifier, it wowould detect whether it is Java identifier or C ++ identifier and translate it to another dialect. if it is neither, then your routine shocould report an error. translation must preserve the order of words and must only change the case of letters and/or Add/Remove underscores. Input The input file consists of multiply testcases. For each testcase, there is one line that contains an identifier. It consists of letters of the English alphabet and underscores. Its length does not exceed 100. Output If the input identifier is Java identifier, output its c ++ version. If it is C ++ identifier, output its Java version. If it is none, output"Unknown!Instead. Sample Input long_and_mnemonic_identifieranotherExampleibad_Style Sample output longAndMnemonicIdentifieranother_exampleiUnknown! Original: Funny programming contest -- Osum

Solution:

There are three situations:
1. Java language
2. c ++ Language
3. Non-verbal (not followed by uppercase letters; the first letter is an uppercase letter)

The following code is correctly submitted in VC mode:

# Include <iostream> <br/> # include <string> <br/> using namespace STD; </P> <p> int main () <br/>{< br/> string S, S2; <br/> unsigned int I, index, length, J; <br/> while (CIN> S) <br/>{< br/> J = 0; S2 = ""; <br/> length = S. size (); <br/> Index = S. find ('_', 0); <br/> If (index! = String: NPOs & S [index + 1]> = 97 & S [0]> = 97) <br/> {<br/> for (I = 0; I <length; I ++) <br/> {<br/> If (s [I] = '_' & S [I + 1]> = 97) <br/>{< br/> s2.append (1, s [I + 1]-32); <br/> I ++; <br/>}< br/> else <br/> {<br/> s2.append (1, s [I]); <br/>}< br/> cout <S2 <Endl; <br/>}< br/> else if (Index = string :: NPOs & S [0]> = 97) <br/> {<br/> for (I = 0; I <length; I ++) <br/>{< br/> If (s [I] <= 90) <br/>{< br/> s2.append (1 ,'_'); <br/> S 2. append (1, s [I] + 32); <br/>}< br/> else <br/>{< br/> s2.append (1, s [I]); <br/>}< br/> cout <S2 <Endl; <br/>}< br/> else <br/>{< br/> cout <"unknown! "<Endl; <br/>}< br/> return 0; <br/>}