1-11 Exercise 3: Prefix of a string

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A string p is a prefix of a string s if the leading characters of s are identical to p. For example, "abc" is a prefix of "abcde". Develop a function prefix that checks if a C string p is a prefix of another C string s.

p是s的前綴若s開頭的一段字串等於p。例如，"abc"是"abcde"的前綴。寫一個程式 判斷字串p是否字串s的前綴。

Example input 1:

abc
abcde

Example output 1:

abc is a prefix of abcde

 

Example input 2:

bc
abcde

Example output 2:

bc is not a prefix of abcde

 

[Exercise] Coding (C) - asked in Chapter 13: Strings by (12.1k points)
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#include<stdio.h>
#include<string.h>
char prefix(char string1[],char string2[])
{
    int i,s;
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}
int main (void)
{
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* **  ** *   **  ** * * *     0;
}
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Hidden content!
#include <stdio.h>

#include <string.h>

int main()
{
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    ** ** *   *  * ** ****** *    
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}
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Hidden content!
#include <stdio.h>
#include *  ** * * ** 
#include ** ******  * *  
//#include <ctype.h>
#define n 100
int aa(char A[],char B[])
{
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}
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Hidden content!
#include *** ***** * *  
  * * * ** *    *  **
int main (){
char **** ***
char *****  *   
 ****   ****  string1:  ***** **
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else
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return 0;
}
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prog.c: In function 'main':
prog.c:7:9: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[100]' [-Wformat=]
 scanf("%s",&string1);
         ^
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Hidden content!
#include  **     *  * *
#include * ** ** ***** 
#include * *** ** *** * 
#include   * ***  *  * 
int prefix(char p[],char s[])
{
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}

int main()
{
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**  *    **** ***** 
*     * *   **  * ****  ** ** * *  **  *    is not a prefix of ** ***  * *

**   * * ** ***   * ******* 0;
}
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#include <stdio.h>
#include   ** **  ** ** 
int main()
{
 **** * **   *        * *** **  length1,length2,c;
  *   ****  *****  ** ****  *** a[100];
   **   *  *    **  *** *  *** b[100];
*  *** * ********** *  ** *  *** d[100];
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if (strcmp(a,d)==0)
  **  * ** ******   *** *  ***** 
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  *  ****  **** *** *  * ** * * **** ** ** *        * ** *** *   * is not a prefix of %s",a,b);
***     ***** **   ** **   *  
 **** *  *  *  * *  0;
}
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Hidden content!
#include  * * *** * *     
#include ** * *    ** *

int prefix (char **** ****  str2[])
{
***     *  ** * ***  ***   * ** length=0, ** *   
  ** ***** ** *  * **  
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*   ** *  ** *  * **** *  
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* *    **  *    *   * (count == length)
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* ** * * * * *   **   ** else *     ***  * * 0;  ** *****   * * *   ***
 *** *   ** ****  * ** * * **  *   
}
int main(void)
{
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*****  * *  * *   *   * * 
  * **    *      **** ******** *   ** **** str1, str2);

* ***     ** * * **** ***** * *    **
 *  **    * *    {
* *  ***  ** **  *****  * * *  **  *    * *   **  *   ***** * ** ** is a prefix of ***   *** * str1, str2);
*  **  ***   ***     **   ***
*  ********   *     ***** *
*  *  ** ** * *  ** **   ***  *  * ******** * ***  * * ** is not a prefix of ****    *   str1, str2);

 **   ** *    ***   *** ** 0;
}
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#include ****  * *  **
#include    * *     ***   ** 
#include  ** *** **   * 

int main()
{
*  * **    *  ** *****    *      prefix[100];
     *   *  ** *  ** ** *       word[100];
 ***  ** ** **   ** * *  ** ***  *   **  **** %s", prefix, word);
*   *  * ****  *  * *** * * * ** i;
** * *****     * ***   *  *  * * = 0; i< strlen(prefix); ++i)
** *** *** **       **   
***  *  * * *  *  * ***   * * *     **  **   ***  **** ******     * **
  *  ****   ****** ** *****       ***** ***  *   *  *   
**** ** *  * ** *** * *   *** ** *  **** **   * *  * *    *  *** * *     * ***  *** *   is not a prefix of %s", prefix, word);
*** ***** * **** *   **     *  *   *  **  *   *** ***    * * * * ** *  ***  ** * **    0;
  *  *  ******  *   *    * * **   * * *** * * ***  * 
*       *****  * **      **
*   ** *  * ***  *  **    *****   *  is a prefix of %s", prefix, word);
*  ** **  * ** ** **** ****  **    0;
}
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#include  **** ** ** * 
#include ** *  * * *
#include  *** * *   * ** 

int main()
{
   **   *      * * * *****  prefix[100];
* ** * ** ******* ***   * **  *   word[100];
 ****  **  **    **   ** * *    *   *  %s", prefix, word);
 *     ***** * **** ** *** ** i;
** ** *** ** *  * **   ** *    **  = 0; i< strlen(prefix); ++i)
       ***   **  ** *
 *    *** *  *****  *   *     ***** **  ***   **  *** *** **  *
 ****** **      ** * *** * *  **** *    *   ***  *  *  
** *  *      * *** ******  *     * * *  ****** * **** ** * *  *** *    * * ** * ****  is not a prefix of %s", prefix, word);
*****        *** * **      *   ******  *    *  *    ** * *    *  * *      **** ****   *   0;
* *  **   *  * * *  ***** * ** **  **  *  ******     *
  * * * ***   ******        *   * 
    *  * ***** * * ******  ***** *       is a prefix of %s", prefix, word);
* **  ***   ** ** ***   *   *** **   0;
}
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* *  ***** **** **  
*      *  *************
 **       ** *  ** *    

int main()
{
* * * *** **  * * char *** *  *
    * *  *  **  char   *
*   * *  **   *  * **       ***  ***  *  *  word);
     * *   ***  int i;
*     *  *   *  * **  for(i = 0; *    *  *   * * * ++i)
 ***     ***  {
   *****   * * *  **** *        ** * ** **
   *  **  * *  *** ** * *** * *  {
**  *   * * *   *  **** ***** *  **        *     *** *    **  is not a  * of   **  **     * word);
***  *  * * ***   * ***** ***  *  * **    *      ***   0;
      *    ***   * ***    * ******* }
* ** *  * * *   }
*   ** *  *     * * ** * * ** is a prefix of **   *    * *** word);
 ** *  ****     ** 0;
}
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