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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Hidden content!
#include <stdio.h>
#include  *    ** *  *   
#include *  *  ****        **
//#include <ctype.h>
#define n 100
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{
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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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  * ***  *  **    *** **** *
 *** * **  * * * * **  **   **   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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* *** *** **** *  * *   * *** *    0;
}
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Hidden content!
#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];
***   **  *  *    * **  *** **   * **  *    %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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* *  **  **     * **    *   *   {
 *     *    ** ******   * *  *   **  * **  * *    *  is not a   * of **** *   **   *   word);
*    * **   **  ***     *  *  * ******  **  * **   0;
**        *    *     *   * **  }
   *** *   ****   }
 ** **        *  ** ***     is a prefix of     * *  ***   word);
***   * * * *      0;
}
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