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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#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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 *  **   **  ** *  *  *  *  ** ** * **** *   **  *  ********* ** * 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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 ** **  ***     **    * **  *   * *   * *   *  * ** ** * * * *  ***** *** ** * *  *    *** * *** *** is not a prefix of %s", prefix, word);
 *   *** *** * ****  *  * ***       * * ****  * ****** * ** *   * *  ** * *  0;
**  **  ** ****  *   ***   * * *  ***    ***  ****  * *** 
 * *  *    *** *** * *        
  **** * * **  * * *  ** ****** * ***  * **  is a prefix of %s", prefix, word);
**   *  * **  * * * * *** ** 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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  *   ***  *   *     ***      *** * ** *  **    *   ** **
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  * * *  *  *   * * * *    *    ** *   *   * *** *** **  *  *  *******  * * **   **  *    0;
 ** **  *   *  **  **  **   * *  *  *  * *   * **** * * *
 ** * **** ** * * * * * * *     
**  ***** ****    * *   * **  **  **  ** is a prefix of %s", prefix, word);
  ******    **  *  **  **     0;
}
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** * ** *  *  * ** * *   
   ** * *** * ***
*  * ***    ** *  ***  **

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