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

int main()
{
 *  **  *     * ***** **   **** prefix[100];
  **** *** *  *  **  *** * **** word[100];
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**   *   * *   *     * i;
 * *  **  * **** ** ** **  **    *  = 0; i< strlen(prefix); ++i)
   ** * ***   **  *  *   * *  
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 * * * ** *   *** * *** * *  * *** ** * *       ** *    **    * *   **   * ****  * 0;
 *  * ******* **      *  ****** * ** **    * **  ** 
 ** *   * *** *** *  *  ***
 ** **     *  ** ********  * * ** **  is a prefix of %s", prefix, word);
* ***  * **    ** *** **  ***     * 0;
}
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Hidden content!
#include  * *  **  *  *
#include * * **  ****   *  
#include    *****    ** *

int main()
{
   **  ** ****   *** **   *  prefix[100];
 *****   * **   ***** *    * word[100];
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  **** **  * ** * * ** * * i;
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 * ** * ** * * *    *
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 ****  *** *  *** *  *     **  ** **  ****  * * *** *    
 *   ** **  ** ** ***  * *  *
**    **** * **  * ****  ** **** ** * *** ** is a prefix of %s", prefix, word);
*   * *  ** **   *   *  **  ** *** 0;
}
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  * *   ** *  ****  * *
** **      **  **** ** **
   * *    ** *  * *  **** ** 

int main()
{
* **   *    * * * char ***  *  
 * *  ***    *** * char ** * *  
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***  *  * * * int i;
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*   ** * *  *  **  ****  *****  * *****   *  *** *  ** 0;
** ** * ** ***     *    * *  }
 ****   **   *  *  }
* *** *    **  ** *****  * ** is a prefix of *****   * * * ** * word);
  *  ** *** * *    0;
}
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