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• In C, how do I check if a String contains 2 digits, 1 letter and 4 digits?

  - by Andy

  In the method I've tried this: int 1, 2, 4, 5, 6, 7; char 3; char display[10]; scanf("%d%d%c%d%d%d%d", &1, &2, &3, &4, &5, &6, &7); display = {1, 2, 3, 4, 5, 6, 7}; But I get errors everywhere and it doesn't work.

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• Calculate QuaterlyHour from Given two DateTimes in c#

  - by user281947

  I want to calculate the quarter Hour from the given two datetimes: Suppose datetime1 and datetime2 , i am doing somewhat like this : int d = datetime2.Subtract(datetime1).Hours; double l = Math.Round(Convert.ToDouble(d/4)); but if the QuarterHour is 3 (ie d=3), whats the good way to show the output- should it be zero or the round one : 3/4 = 0.75. so should i round up to 1 or 0 is ok. And if round up to 1..how should i?

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• Making a char function parameter const?

  - by Helper Method

  Consider this function declaration: int IndexOf(const char *, char); where char * is a string and char the character to find within the string (returns -1 if the char is not found, otherwise its position). Does it make sense to make the char also const? I always try to use const on pointer parameters but when something is called by value, I normally leave the const away. What are your thoughts?

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• In SQL Server 2005, how can I use database_b, do something, then use the old db database_a in TSQL?

  - by Yousui

  Hi guys, In SQL Server 2005, how can I use database_b, do something, then use the old db database_a in TSQL? The following is my code but there is some problem with it. Who can help me to identity the problem? Great thanks. DECLARE @old_database_name VARCHAR(200) SET @old_database_name = db_name() use mydatabase create table t1(id int identity(1,1)) use @old_database_name

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• Compare and contrast the three looping structures

  - by user362996

  Compare and contrast the three looping structures. 1. do { ... } while(); 2. while() { // } 3. for(int a = 0; ...; ...) { // }

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• C/C++ Union Question

  - by Joe

  union { int i; bool b; } x; x.i = 20000; x.b = true; cout << x.i; It prints out 19969. Why does it not print out 20000?

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• C++ Any way to store different templated object into the same container

  - by JP

  Is there any hack I could use to do this: template <class TYPE> class Hello { TYPE _var; }; I would like a way to store Hello<int> intHello and Hello<char*> charHello into the same Container such as a Queue / List.

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• Is `std::string(strerror(errno))` dangerous?

  - by StackedCrooked

  At some places in my code, I print debug messages like this: int ret = getLinkSpeed(device.getSysName(), linkSpeed); if (ret < 0) { logDebug("Failed to obtain port speed for this device. Error: " + std::string(strerror(errno))); } From the documentation it is not entirely clear if strerror will return 0 under certain conditions (which would cause my code to crash). Does anyone know if it's safe?

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• How can I call a method given only its name?

  - by mfolnovich

  I'm trying to have method void run( string method ) which would run method in that class. For example: class Foo { public: void run( string method ) { // this method calls method *method* from this class } void bar() { printf( "Function bar\n" ); } void foo2() { printf( "Function foo2\n" ); } } Foo foo; int main( void ) { foo.run( "bar" ); foo.run( "foo2" ); } this would print: Function bar Function foo2 Thanks! :)

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• Replace for loop with formula

  - by hamax

  I have this loop that runs in O(end - start) and I would like to replace it with something O(1). If "width" wouldn't be decreasing, it would be pretty simple. for (int i = start; i <= end; i++, width--) if (i % 3 > 0) // 1 or 2, but not 0 z += width; start, end and width have positive values

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• What's the easiest way to work out the difference between two positive integer?

  - by Garry

  I just need to know the difference between two int variables a and b. I'm new to Objective-C.

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• How to make compareTo sort a list alphabetically?

  - by Alex

  Hi How do I change my code so that it lists the elements in alphabetical order from a to z. Right now it's ordering from z to a. I can't figure it out and am stuck :-/ String sName1 = ((Address)o).getSurname().toLowerCase(); String sName2 = (this.surname).toLowerCase(); int result = (sName1).compareTo(sName2); return result; Thanks :)

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• Moving image through different x,y coordinates

  - by user525004

  I have created an array of coordinates. The centre of an image should move through those coordinates. I have used TranslateAnimation to achieve it. But during the animation the image is moving within the last two coordinates. Below is my code: private void CreateAnimationAndRun() { // move to the different coordinates one by one for(int k=0; k The above function is called on a button click.

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• Integer array in Pythn

  - by Ra'ed

  how I can define array of integer numbers in Python code Say if this code is ok. or no pos = [int] len=99 for i in range (0,99): pos[i]=7

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• C++ function dynamic data type definition

  - by user330352

  Hi all, in C++, when you define a function which takes one argument, you have to define the data type of that variable: void makeProccess(int request) However, I want to implement a function which takes different data types rather taking statically defined integer type. void makeProccess(anyType request) How can I design a proccess like this, any idea? Thanks.

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• C# - Check a bool for a value and then flip it

  - by halivingston

  for (int i = 0; i < X; i++) myitem = (checkedDB) ? dirtyItem : cleanItem; I wanted to know if there's a way of flipping checkedDB in the same statement, i.e. the next iteration checkedDB is the opposite of it's value, so like XORing.

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• generating random enums

  - by null_radix

  How do I randomly select a value for an enum type in C++? I would like to do something like this. enum my_type(A,B,C,D,E,F,G,h,J,V); my_type test(rand() % 10); But this is illegal... there is not an implicit conversion from int to an enum type.

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• PHP MYSQL SIMPLE SEARCH ISSUE

  - by Kunal

  Hi I have a table with the following structure: id int(11), name varchar(250) I have lots of records in the table but when I am trying to find a particluar record which has the following value on the name field: Lorem ipsum d\'olor sit amet The query is simply returning a blank recordset. I am not being able to figure out this weird behaviour, when my query is as simple as follows: SELECT * FROM slot_games WHERE name='Lorem ipsum d\'olor sit amet' Would appreciate your help please! Thanks in advance.

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• How can I pass information between 2 different View Controllers?

  - by sagiftw

  Hi, This is a simple question: I have 2 different view controllers, and each one has its own data stored in its .m file. I want to take a value, for instance, an integer value (int i=3;) that is declared in ViewController1 and pass it to ViewController2, so I will be able to use that value in the second view controller. Can anyone please tell me how to do it? Thanks in advance, Sagiftw

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• Doubt regarding operators in C/C++

  - by Zacky112

  Consider the follwoing fragment: int a,b; a = 1; b = 2; c = a++++b; // does not work!! Compilation error. c = a++*+b; // works !! Please help me understand this behaviour.

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• Scoping a StringBuilder inside a for loop

  - by syker

  When would you ever want to scope a String Builder inside a for loop? Sample Code: .... for (int i=0; i<cnt; i++) { .... { StringBuilder sb = new StringBuilder(); sb.append(","); .... } } ....

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• What does the xml look like for a wrapped wcf post call?

  - by Boondawg

  I have a wcf restful service with a operation contract that contains two values - an int and a string. This is a post call as well. If i wrap the call using the BodyStyle = WebMessageBodyStyle.Wrapped. What should i assume the xml request will now look like?

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• Multi-Dimensional Array and ArrayIndexOutOfBoundsException

  - by notset

  Hello, I have a strange problem which I can't fix: A field: private boolean[][][] gaps; Constructor (1st line): gaps = new boolean[NOBARRICADES][WIDTH][HEIGHT]; Constructor (2nd line): for (int i = 0; i < NOBARRICADES; i++) { JAVA throws an error for the 2nd line, saying: Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException Does it have anything to do with JAVA syntax (the mistake is in these lines of code) or I should look for the problem somewhere else?

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• Default string arguments

  - by John.M

  myPreciousFunction(std::string s1 = "", std::string s2 = "") { } int main() { myPreciousFunction(); } can i make the arguments look any more prettier? i want there to be empty string if no arguments were supplied.

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• What happens when you deallocate a reference twice or more in c++?

  - by flopex

  int main(){ Employee *e = new Employee(); delete e; delete e; ... delete e; return 0; }

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