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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}
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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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}

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{
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   ***** ***  **** *    
   * ** ******  * ****     * * **    is not a prefix of   **  ** ** * 

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

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

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