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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#include <stdio.h>

#include <string.h>

int main()
{
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}
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Hidden content!
#include <stdio.h>
#include  *   * *  *  **  
#include  ***** ** *** * **
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}
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Hidden content!
#include  * * * **   *
  *****   ***      *  *
int main (){
char  ** * * *
char  * **  **  
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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()
{
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}
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Hidden content!
#include   * * *   *   
#include ***  ***   * **  

int prefix (char   *** str2[])
{
* ***       ****     ** **  **     length=0, ** **
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   ****    ****     * *     *** * 0;
}
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#include   *       *  *  *
#include   * ** * * * **  
#include  ***    * * ***

int main()
{
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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];
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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!
 * **  **  **  * * *  *
***  *       **   * * *
* *** * *   ** **** *  *

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