Topic profile page for Sizeof.
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Topic "Sizeof" was discussed 8,318 times on 401 sites in last 3 months
Started 3 days, 16 hours ago (2009-11-26 22:06:00)
by nkrao123@gmail.
" The sizeof('x') constants do not return expected results. In C, the return value is 4 for the sizeof character constant and 2 for the sizeof multicharacter constant " i got output for 4 for printf("%d ",sizeof('x'); .but i am not understand how output 2 for this statement "2 for the sizeof multicharacter constant ". please give any one example for this output 2
Started 4 days, 10 hours ago (2009-11-26 04:18:00)
by Nidhin KR
Hi Team, I am using sizeof() in c# I need to find the memory size required by the array which is of the type strut. Please see the snippet. using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Globalization; namespace sizeOfDemo { struct Vertex { public float r; public float g; public float b; public ...
Started 4 days, 14 hours ago (2009-11-26 00:28:00)
by nkrao123@gmail.
Code: int main() { char ch='a'; printf("%d ",sizeof(ch)); printf("%d ",sizeof('a')); return 0; } ouput 1 4 i am littlebit confusing on the output of sizeof('a') is 4. can you clear my confusion?
Started 2 weeks, 4 days ago (2009-11-12 03:10:00)
by Julia Lawall
( From: Julia Lawall As observed by Joe Perches, sizeof of a constant string includes the trailing 0. If what is wanted is to check the initial characters of another string, this trailing 0 should not be taken into account. If an exact match is wanted, strcmp should be used instead. The semantic patch that makes this change is as follows: \(http://coccinelle....
Started 2 weeks, 5 days ago (2009-11-10 19:42:00)
by Ploe
I'm trying to get to grips with malloc however the sizeof function - no matter what I do, always returns 4. Can someone explain to me what is up? Code: #include #include int main() { int *ptr = malloc(sizeof(int) * 10); int len = sizeof(ptr); printf("Len: %i", len); }
Started 1 month, 1 week ago (2009-10-17 16:41:00)
by hugo2x
I was wondering if there was a way to makea function, that like the sizeof() function returning the byte number, it returns the bit number? Code: //for example printf("%d bytes",sizeof(int)); //prints 4 bytes Code: // I want to make a function modification, or a new function that prints amount of bits printf("%d bits",sizeofbits(int)); //a new functions //prints 32...
Started 3 days, 20 hours ago (2009-11-26 18:22:00)
by Windows Programmer
From a Windows CE 6.0 user mode process, I'm trying to get information about kernel memory using VirtualQueryEx(). The code goes something like this: hProc = OpenProcess(PROCESS_ALL_ACCESS, FALSE, pidOfNKdotEXE); if (hProc) { rc = VirtualQueryEx(hProc, 0xd0000000, &mbi, sizeof(mbi))...
Started 3 days, 20 hours ago (2009-11-26 18:22:00)
by Windows Programmer
From a Windows CE 6.0 user mode process, I'm trying to get information about kernel memory using VirtualQueryEx(). The code goes something like this: hProc = OpenProcess(PROCESS_ALL_ACCESS, FALSE, pidOfNKdotEXE); if (hProc) { rc = VirtualQueryEx(hProc, 0xd0000000, &mbi, sizeof(mbi))...
Started 1 week ago (2009-11-22 22:19:00)
by tyftyftyf
Hi, I allocated a struct from a heap, the struct may be like this one: struct abc{ int tmp1; string tmp2; int tmp3; }*pabc; pabc=(abc*)malloc(sizeof abc); And when I initialize the string(pabc-> tmp2="1234"), an "Illegal Pointer" exception occured. It seems that the size of the string is changed, so I decided to allocate a bigger size. pabc=(abc*)malloc(sizeof abc+4); But the error still ...
Started 5 days, 21 hours ago (2009-11-24 17:06:00)
by Anthony Appleyard
I know well how to ask the user to choose a file: BOOL GetFileName(HWND wn,char*file,char*t,char*f,short write/*=1*/) {short j; strcpy(file,tit); ofn.lStructSize=sizeof(OPENFILENAME); ofn.hwndOwner=wn; ofn.lpstrFilter=f; ofn.lpstrCustomFilter=0; ofn.lpstrFile=file; ofn.nMaxFile=128; ofn.lpstrFileTitle=tit; ofn.nMaxFileTitle=256; ofn.lpstrInitialDir=0; ofn.lpstrTitle=t; ofn.Flags=write?OFN_...
Started 3 days, 23 hours ago (2009-11-26 15:41:00)
by sDoky
Hi, I am writing a program in C, which should work with matrixes. I want to have dynamic array within a structure. Something like this: Code: Select all typedef struct input { int x; int y; int array[][]=malloc(x*y*sizeof(int)); } Tinput; Because first two values I am gonna load is a size of the matrix, then I should be able to load the matrix correctly. I do not know how to put it there...
Started 6 days, 11 hours ago (2009-11-24 03:34:00)
by opriyer
Hello, Here is a sample code that is giving problems: while ( true ) { readBufPtr = fgets (buf, sizeof(buf), stdin); if (readBufPtr) syslog (LOG_INFO, buf); else if (EINTR != errno) { syslog (LOG_ERR, "[ESReadStdin] read from stdin failed. Reason: [%s]. Exiting." , strerror (errno)); exit(-1); } } The fgets call gives the ...
Started 3 days, 20 hours ago (2009-11-26 18:22:00)
by Windows Programmer
From a Windows CE 6.0 user mode process, I'm trying to get information about kernel memory using VirtualQueryEx(). The code goes something like this: hProc = OpenProcess(PROCESS_ALL_ACCESS, FALSE, pidOfNKdotEXE); if (hProc) { rc = VirtualQueryEx(hProc, 0xd0000000, &mbi, sizeof(mbi))...
Started 2 days, 22 hours ago (2009-11-27 16:16:00)
by Arzar
Citation: Envoyé par camboui std::string n'est pas POD alors. Et toute structure contenant des std::string ne l'est pas non plus. Comme tu dis les PODs sont donc des struct "C like". Je me demande dans quel cas ça peut-être utile ce genre d'info. Par exemple dans la STL de VS ou celle de GCC un appel à std::...
