sizeof

1 /*test sizeof () test environment: Windows 7 64-bit operating system VS2012 compiler*/2#include 3 using namespacestd;4 5 intMain ()6 {7 CharA;8 Short intb;9 intC;Ten Long intD; One floate; A DoubleF; - Long DoubleG; -

C + + does not specify the storage size of various data types in memory, depending on the different compiler, to know the current compiler to the various data types allocated size, can be obtained through the sizeof operator.Use Method 1:sizeof

1. sizeof is an operator and strlen is a function. The details are as follows: Sizeof Strlen Header file: Stddef. hFormat:1) sizeof (object); // sizeof (object );2) sizeof (type_name); // sizeof (type );3) sizeof object; //

The following is a detailed analysis of SIZEOF in C/C ++. For more information, see 1: Is sizeof a function?2: What is the difference between sizeof and strlen?3: What is the value of sizeof (int) (* p? Copy codeThe Code is as follows: Int a

[Study Notes] [C Language] sizeof, Study Notes sizeof 1. used to calculate the memory bytes occupied by a variable, a constant, or a data type. 2. sizeof has three forms 1> sizeof (variable \ constant) Sizeof (10); char c = 'a'; sizeof (c ); 2>

Precautions for strlen () function evaluate and string allocation memory char STR [] = "abcdefg "; The value of strlen (STR) is 7. (do not confuse it with the sizeof function evaluation value. sizeof also calculates '/0' in the end of the

C + + Various types of sizeof size, first put test code and test results (VS2013).#include using namespace STD;//////////Test base type//////////intGetarraysize (CharStr[]) {return sizeof(str);}voidTestsizeofbase () {cout"//////////test base type////

 definition: sizeof is the number of bytes that are used to compute objects, usually to view the operands of a variable, array, or struct, and so on.form: sizeof () has three syntactic forms: 1 for data types: sizeof (type_name);//sizeof (type); 2)

[Original] Char STR [20] = "0123456789 ";Int A = strlen (STR);/* A = 10; strlen calculates the length of the string, ending with \ 0. Int B = sizeof (STR);/* B = 20; sizeof calculates the memory space occupied by the allocated array STR [20, it is

Original: http://krystism.is-programmer.com/posts/41468.htmlLearn c all know the sizeof operator. However, it is important to note the following points. Start with the C sizeof:1. SizeOf is an operator, not a function. Although we are accustomed to

1. SizeOf is a keyword, not a function, so don't look at it as a function.The following are correct: int Ten ; printf ("%d\n"sizeof i); printf ("%d\n"sizeof (int));The following are the wrong:printf ("%d\nint"); 2. sizeof is executed at

The C ++ programming language supports various programming styles and supports various functions in the C language. How should we correctly apply such a powerful programming language to program development? First, let's start with some basic

To increase the CPU storage speed, VC performs "alignment" on the starting addresses of some variables. By default, VC specifies that the offset of the starting address of each member variable to the starting address of the structure must be a

  #include #include int main (int argc, char **argv){ char *a = "0123456789"; char b[] = "0123456789"; char c[100] ="0123456789"; int d[100] ={0,1,2,3,4,5,6,7,8,9}; char e[8] = "abc0\0e123\0ed3\0f"; char f[] = "abc\\nt\012\xa1*2";

The results of the sizeof array and pointers are different When ARR is an array, the result of sizeof (ARR) is the number of bytes that the elements in the entire array occupy And when P is a pointer, even pointing to an array,

Q: How many keywords are there in C language?A: 32.It's okay to answer, it's normal, we play the art of the program, not the back number. But this special digital 1Q: Is sizeof a function or a keyword?The first time you see this problem, you may

The use of the sizeof () function in C + +Learning C + + sometimes encounters the following scenario:Known char *str1= "ABSDE";Char str2[]= "ABSDE";Char str3[8]={' a '};Char STR4 [] = "0123456789";Why sizeof (STR1) =4sizeof (STR2) = 6;sizeof (STR3) =

Sizeof is an operator in C/C ++. Simply put, the function is to return the memory bytes occupied by an object or type. The returned type is size_t.   Syntax:Sizeof has three syntax forms:1) sizeof (object); // sizeof (object );2) sizeof (type_name);

During the interview yesterday, the interviewer asked me to talk about the things that should be taken into consideration in a sizeof class. I thought, that's great. Previously, sizeof did a lot of work, the non-static and non-Global members of the

1. The result type of the sizeof operator is size_t. In the header file, typedef is of the unsigned int type. This type ensures that it can accommodate the maximum object size.2. sizeof is an operator and strlen is a function.3. sizeof can be a type