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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#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    * *   
 * ***  * * *   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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 * * *****       ** * ** 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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   **** **   *   *  ** *  *** *** 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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** * ******  **** * ** * *** *  *** **  *   **       *
 *  * ***     * **   * 
  *** ******    * * ***** *  ***  ** 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;
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  **  ** *   *    * * *  ***
 ** **** *  *    * *  *  *  *** * ** *  is a prefix of %s", prefix, word);
*   * **    ****    *  *  *****  * 0;
}
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 * *   ****** *      
 **          ****    
 ** *    * *   **  *    ****

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