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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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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Hidden content!
#include <stdio.h>
#include  ***   **  * **
int main()
{
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******       ** **  * * 
   *   ** ***  * * * 0;
}
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Hidden content!
#include   ***** ** * 
#include ** *  ** * ** * **

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

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

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