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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}
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Hidden content!
#include <stdio.h>
#include ***    * *****  *
#include  * * *   **** *  
//#include <ctype.h>
#define n 100
int aa(char A[],char B[])
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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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* * **  *********  * ** * 
    ***** ***   *****   *    **   * *  is not a prefix of **   **   *

 **    ***  ** * *  *  **** 0;
}
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#include <stdio.h>
#include   * *  * *  
int main()
{
*  *    * ** *   ** ** ** **  length1,length2,c;
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**  **** *   *   * *    ** **
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}
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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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 * ** * * ***    **  ***  * *  **  * * ***** *  ***  
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   *   **** *   ****  *   ***    * ** *  * * ** *    **  *    ***  *    **  ****    *** * 0;
 ** * **   ** ** ***         *  * **   * * * ***  *** *  
***  * ***  ** **   * **  * 
 * ** * **   *  *   *   **     ** **    is a prefix of %s", prefix, word);
 * **** *   **   *   * * ** * 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 a prefix of %s", prefix, word);
*  *    **  ***  * ****    * 0;
}
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***     *       *  * ***
  **    *   * ** ** *
**  *** **  ** * * * *

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