When programming C for the command console, what happens when you have a function that tries to use SCANF to ask user input for a CHAR variable, and the user types CTRL+Z (EOF) and hits enter? For example: char promptChar() { char c; printf("Enter a character: "); scanf("%c", &c); return c; } If the user types CTRL+Z ...
The first example does not work when you go to delete the pointer. The program either hangs when I add the null terminator or without it I get: Debug Assertion Failed Expression: _BLOCK_TYPE_IS_VALID(pHead->nBlockUse) from Visual Studio 2008 //Won't work when deleting pointer: char *at = new char [3]; at = "tw"; // <-- not sure what'...
How do I put strings into an 2D char array from (for example) a file? char buffert[10][30]; int i = 0; while(!feof(somefile)) { fscanf(somefile, "%s", temp); buffert[i][] = temp; i++; } This will not do it. ...
//In header file: class definition: class myString { public: myString(void); myString(const char *str); myString(const myString &); //copy constructor ~myString(void); //destructor void swap(myString &from); private: char *stringPtr; int stringLen; }; //in cpp file, defining them member fun...
We need to pass a format _TCHAR * string, and a number of char * strings into a function with variable-length args: inline void FooBar(const _TCHAR *szFmt, const char *cArgs, ...) { //... } So it can be called like so: char *foo = "foo"; char *bar = "bar"; LogToFileA(_T("Test %s %s"), foo, bar); Obviously a simple fix would be t...
Please could someone explain why this does not work? char *test = "test"; _TCHAR *szTest = CA2W(test); And please tell me what I should be doing instead. Instead of giving me equal text, it's giving me: ...
Is there a quick way to retrieve given character's position in the english alphabet in C? Something like: int position = get_position('g'); ...
Hello, I am not a very experienced C++ programmer, i get a warning when i do the following: if (myString[i] != 'x') { } what is the appropriate way to compare these? thanks for your help! ...
In the following lines of code, I need to adjust the pointer pm by an offset in bytes in one of its fields. Is there an better/easier way to do this, than incessantly casting back and forth from char * and PartitionMap * such that the pointer arithmetic still works out? PartitionMap *pm(reinterpret_cast<PartitionMap *>(partitionMaps)); ...
I found some confusing code during code review and am a bit puzzled. Doing some research I found this situation. I wrote this sample of code to highlight the problem char d = '©';// this is -87,the copyright symbol , (actually its 169 unsigned) if(ispunct(d)) // will assert. { } so, the programmer who was bug fixing, did the ...
Hi, I need to store a char array inside a class and then return it. I have to admit that I'm a bit confused about pointers and have tried everything I can think of but can't get it to work. Here's what I have: #include <iostream> using namespace std; class Test { public: void setName(char *name); char getName(); private: c...
Hello, Is there a elegant way to convert 'const wchar *' to 'const char *' on Mac OS X? Kat ...
I have two strings in a java program, which I want to mix in a certain way to form two new strings. To do this I have to pick up some constituent chars from each string and add them to form the new strings. I have a code like this(this.eka and this.toka are the original strings): String muutettu1 = new String(); String muutettu2 = new S...
Is it possible to get a char* for a string variable in C#? I need to convert a path string to a char* for using some native win32 function ... ...
I have a piece of C code that looks like this: const char (*foo)[2] = bar(); Now bar() is a function that returns a (const void *). How do I properly cast this const pointer? The code produces this warning from GCC : "initialization discards qualifiers from pointer target type". Here are some of my unsuccessful attempts: const char (...
I keep getting this error: initializer-string for array of chars is too long Even if I change num and length to 1, it still gets the error: #include <iostream> #include <cstring> using namespace std; int main() { const int num = 11; const int length = 25; char array[num][length] = { "Becky Warre, 555-1223" ...
Is there a C strings library for C (not C++) that implements an abstraction over char * and wchar_t * strings? The requirements are: to be BSD/MIT/CDDL licenced implements some kind of reference count mechanism has support for regular expressions has Unicode support Thanks, ...
In C, I can do like this: char s[]="hello"; or char *s ="hello"; so i wonder what is the difference? I want to know what actually happen in memory allocation during compile time and run time. ...
I am using NHibernate against a legacy database which uses Char column types (fixed Strings). I am mapping the char columns to strings in properties. Currently my criteria queries are failing if the value against which i am querying is not padded with spaces such that the length of the string is equal to the char column length. I dont wa...
Hi, I have a program that is manually generating a pdf using PDFSharp in C#. Although it is rather tedious I have to use it and am nearing completion of the task. Only one issue remains Problem: I am wondering how I can find out what the width of a given char is for a given font size in Arial I am having trouble coming up with a more ...