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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}
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Hidden content!
#include <stdio.h>

#include <string.h>

int main()
{
 ** *** * ** * *** **  ******* lenght1,lenght2,c;
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**** ** *    * * ****  *   * * ** 0;
}
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Hidden content!
#include <stdio.h>
#include **** *  * ** *
#include   *** * **   *
//#include <ctype.h>
#define n 100
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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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   ** ***  * ****** ** * 
 * *  *    ***** *   **** *  ** **   is not a prefix of ***     ** ** 

 *** **   *    *  *** **** 0;
}
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#include <stdio.h>
#include   *  *  ** * * *
int main()
{
       * * **  *    * * * ** ** * length1,length2,c;
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*   * *   **  * ***   ***  **
     * ** * * ****  0;
}
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Hidden content!
#include   ** ** *   *
#include *** ** *** * *  

int prefix (char    *** str2[])
{
 *  * *     * *    *   * **  *   length=0, *** * *
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}
int main(void)
{
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    **   *******  **  **** ** * ** ****   **** **    * * **    is a prefix of *  ** ***  str1, str2);
*     ** ***     * **  * **
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*  * * *** **  * **  ****** *** * *** *   *  *** *****     ** **  ** ** 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)
     ** **  *   * ***        
    *  * * **    **  * **   * * * *  ***     *  ** *  * *  **  * *
 **** ** *   *** * **   ***       ***  *** *** ** * * *
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* *   **** * ***    * *   ***** *      *  * *** *  ** *   *   *  ** *  ******** *   ***   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)
  * *  *   ***** ***   *  * * **
   *  *      * *  *      ** *  ***   *  *** *     ****     *    * * ****  **
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 *  ** * * * * * ***   *   ***       **      **  * *   *  ***   * *  *** * **** *    * *  0;
******* ****  **** *  **   **   *  **  **        *    **
  **  **     *  * * ** * *
******  *** ***   ** *****  *    * *   is a prefix of %s", prefix, word);
   *  * * ** ****      **** 0;
}
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**   **   *      **   *
** **  * * * * *  * ******
* **  * *   ** **** * 

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