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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    {
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    }
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    {
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    }
}
int main (void)
{
    char chaine1[1001], chaine2[1001];
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*    **  * *   **  *   *  *  *** *    * ****    
* **    * *    ** * ***       * 0;
}
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#include <stdio.h>

#include <string.h>

int main()
{
   ***    **  *** ****  *  **     lenght1,lenght2,c;
*** *      *** *** * **     b[100];
* ***  *   **  * *  *    *  a[100];
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     **** ****  *  * **  ****  *
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 **** ** ****** **** *  
* * * * **  * **  * * ****** 0;
}
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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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}


int main()
{
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* * ***  *****       * ***  *   0;
}
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Hidden content!
#include  ** **  ***** * 
  ****    *  *  ****** * 
int main (){
char * *    *  *
char    ** * 
 ** * * * * ** string1: ** *****
 *** * *** *** ****  *  * 
 * *    ***  * string2: *      *
 **     ****  *   *** *   ***
* * * **   *     *  ***
***  *   *** *  ****  *** **  **  * *** is   **    ** of  *   ****   * *** *
else
 *    **** *  **     ***** **   * ****   is not prefix of ** ***  *  ***   **  

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[])
{
**    ***  *  *****  ******  *   ** ** ***
* **   ** * **  ***** ****   0;
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  * ** * * * *  *** *  *** *        ** 1;
  ** *   ******** * **   
* **  ***  ** **  *   ** **** *** 0;
}

int main()
{
  *  ***********  * *** * p[999],s[999];
 **** ******** * **    * ** ***   **  *** * 
**    *** *   ***   * *   *   *  *  * 

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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)
 ** **          ***  **   **  
 ***** *   ******* * *  **********  ** ***** ***   *   *   ** ***  * *  is a prefix of %s",a,b);
* *** *  *  * * ** *   * ****
* **  **  *  ** **   **     
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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, *  ****
 * *   * **  *     
** * *   * * **      *** **** =  **  ***  ** *** *
**   * *  **** ****   * * **
** *  * *** *   * * * **** * *  * ** *  * *
*  *** * *** *  **   *       *  ** ** *
* ***    *** *   ***  **** ** if  **  ** ** 
*        ** *     *         **** *  **   **   **     
**  *   ** *   *    *   * ****  ***     }
  ***  *          ** * *** ** 
* * ****  * *  ***   *** (count == length)
   * * * ** *       *** *  *  * * ** * **    * 1;
 * ****  * *** ***  **     * else     * ******* 0;  *  **  * * *****    
  *  *  *    *   **** *   ******** 
}
int main(void)
{
*** ****     ****  ****    ****     ** ***  ** * * 
******  *    *****   **   
**  *  * *   *   *    *  **     * * **   *   * * str1, str2);

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

*    * * * **** ***** * **      ** 0;
}
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Hidden content!
#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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Hidden content!
#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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