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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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 * ***
* ** * * *****   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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#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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  ***  *   *** ** * *  * *  ** *  * * *           *** **  is not a prefix of ** *   str1, str2);

 **  *** *    **  *  *** * * **** 0;
}
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#include  *      * * 
#include *     * * * *   *
#include  * ** * *   * ** *

int main()
{
*     *   *  *  ****     * ** prefix[100];
**  *  *   * ***  * * ****     word[100];
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* ** *   ** *  *****    ***** 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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* * *  ***** ***  *    **** ** ** * * * * **   * **   *****   **    ******* **  *  * 0;
 * *   * ***   *  *** *   **  *     *** *** ** * *   
      ***** ***     *  **    **
  *     * ***   *       *   * * ***  is a prefix of %s", prefix, word);
*** *  *     * ** ***     * * * * *  0;
}
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Hidden content!
 **   * **   *** *
****  * ** * ** *   *** 
    *      * **      *  

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