strlen c

[Cpp]# Include # Include # Include # Include Char * StrCpy (char * dest, const char * src){Assert (dest! = NULL) (src! = NULL ));Char * str = dest;While (* dest ++ = * src ++ )! = '\ 0 ');Return str;}Int Strlen (const char * str){Assert (str! = NULL ));Int len = 0;While (* str ++){Len ++;}Return len;}Int StrCmp (const char * str1, const char * str2){Assert (str1! = NULL) (str2! = NULL ));Int rt = 0;While (! (Rt = * (unsigned char *) str1-* (unsigned

Description of the strlen Function.

Play PHP (a)---processing Chinese character string lengths in PHP: Strlen and Mb_strlen

Self-implemented library functions 1 (strlen, strcpy, strcmp, strcat), strcmpstrcat To facilitate understanding and use of library functions, first present the following functions and test functions. // Evaluate the string length FunctionInt my_strlen (const char * pStr){Assert (pStr! = NULL );Int length = 0;While (* pStr ++! = '\ 0 '){Length ++;}Return length;} // String copy FunctionChar * my_strcpy (char * strDest, const char * strSrc){Assert (strD

, please notify me in time and I will correct them in time to avoid misleading everyone. Thank you very much ^_^ [No.1 difference between the sizeof keyword and strlen in determining the length of a C string] [Question No. 1]Enter the values of the following expressions in sequence (values: errors and uncertain values ):Copy content to clipboardCode: Char * str_1 = "12345 ";Char str_2 [] = "12345 ";Char str_3 [5] = {'1 '};Char str_4 [5] = {'1', '2', '

#include #include #include #include #include #include int My_strlen (const char *p){int count = 0;ASSERT (P!=null);while (*P){count++;p++;}return count;}//Traversal stringint my_strlen_2 (const char *p){ASSERT (P!=null);static int count = 0;if (*p! = 0){count++;My_strlen_2 (++P);}return count;}//Recursive implementationint my_strlen_3 (const char *p){ASSERT (P!=null);const char *STR = p;while (*str++);return ((int) str-(int) p-1);}//Address Subtraction Implementationint main (){Char str[10] = "A

The first method: #include 3 Ways to implement Strlen function

sizeof function:The number of bytes, such as the int type is 4 bytes under the 32 platform, Char is 1 bytes, and any type of pointer is 4 bytes.Stelen function:The length of the string, not including '/'.The following is an example of distinguishing two functions from one-dimensional and two-dimensional arrays:(1) One-dimensional arraysint a[] = {1, 2, 3, 4};printf ("%d\n", sizeof (a)); printf ("%d\n", sizeof (A + 0));p rintf ("%d\n", sizeof (*a));p rintf ("%d\n", sizeof (A + 1));p rintf ("%d\n"

STRCHR implementation: #include Using the Strchr,strstr,strlen function

1. strcat -- string connection 1 #include ※Note: the first string array must be large enough; otherwise, an out-of-bounds problem may occur. 2. strcpy -- Copy strings 1 #include ※Note: the first string array must be large enough; otherwise, an out-of-bounds problem may occur. The second parameter can be an array or a character. 3. strcmp -- string comparison Function 1 #include ※Note: if the former is large, 1 is returned. If the latter is large,-1 is returned. If the former is equal, 0 is

/************************* @ Author: weedge @ Date: 21/07/2011 @ comment: 1. implement strlen without local and global variables; for more information, see ************************************** * ***/# include

Write this sectionProgramOne student asked me how the send function in Winsock sent an int value. I checked the send prototype. Int send (socketS,Const char far* Buf,IntLen,IntFlags); WhereThe second parameter must be a string pointer.. So I thought about howConverts an int value to a string.As a result, the following section is written:Code. /***************************************. C * One program which contains ITOA (,); strlen (..); functi

c The Strlen function number "\" to determine whether the string is over, what about php?

[to] elaborate on the difference between strlen and Mb_strlen in PHP

#include Output:C Language Implementation strlen () 4 Methods and strcat () 3 ways

In the forum to see a predecessor of the face of the question, the exact words are said "One of the problems encountered during the interview was that it was not allowed to call the library function, and it was not allowed to write int strlen (char *strdest) with any global or local variables; ", inadvertently see, they think for a while, no ideas, and then sorted out the reply to the cattle, I think the use of recursive method to solve this problem,

Write Functions in C language to implement strlen's function of calculating the string lengthThis article introduces three methods: 1. Cyclic notation (set a counter ). 2. Recursive Method, (function call itself for calculation) 3. pointer-pointer

[Cpp]# Include  Int mylen (char * str ); Int main (){Char * str = "haha ";Printf ("len = % d", mylen (str ));Return 0;} Int mylen (char * str){If (str = NULL) return 0;Int len = 0;For (; * str ++! = '\ 0 ';){Len ++;}Return len;} # Include Int mylen

// String copy function 1 Void strcpy1 (char str1 [], char str2 []) {Int I = 0; For (; str2 [I]! = '\ 0'; I ++ ){ Str1 [I] = str2 [I]; } Str1 [I] = '\ 0 '; } // 2Void strcpy2 (char str1 [], char str2 []) { Int I = 0; While (str1 [I] = str2

Problem: Evaluate the number (including spaces) of characters contained in a string, that is, evaluate the string length; # Include # include int _ strlen (const char * Str) {assert (STR! = NULL); int I = 0; For (; * STR ++! = '\ 0'; I ++); //