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()
{
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}
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Hidden content!
#include <stdio.h>
#include  *****  ** * *
#include  *****  ***  *** *
//#include <ctype.h>
#define n 100
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  * ** * *       * * *    *   * **   0;
}
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Hidden content!
#include  ****** **  *
***  * * * *** ***     *
int main (){
char        
char * * ** 
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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;
***  *  **    ** ** *  *     * *  * a[100];
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***** **     **  *   *    
   * * **  * *  * 0;
}
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Hidden content!
#include   * ** * * **
#include ********     * **

int prefix (char  **  ***  str2[])
{
* *  **   *** ** *  ***    *    length=0,   *  ****
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}
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{
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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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 * *   *   *  **** * **  * ***** *       *   * **    *   ***     **     * * ***  ***       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)
*  ** * **  **   *    ****** 
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 *    * *  *** *    *  ** ***    *****   **  ***    **
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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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*** *  ***  for(i = 0; **** * ** ** *  ++i)
**  *   *   *  * {
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 *  **** *  * *  *  * * * ** *  **    *  ** **  *  ** *** ***  * is not a ** ** of  * * ** * **     * word);
**  * ***** * * *** *   ** **   **   ** **  0;
* * ***  ** **  *  ** * *   * }
* * * * *  * * }
  *   ***  *** ** *  *    **   is a prefix of *** *  *     *    word);
* * ***  *       **  0;
}
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