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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#include <stdio.h>

#include <string.h>

int main()
{
* **  **  * * ******* ** ** * lenght1,lenght2,c;
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   *** * * ******* *  ****** 0;
}
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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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     *****  * ***** **   0;
}
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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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}

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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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 * ****  *  * *** * ** * * **  d[100];
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 *** *****   * *  * * *  *       **** * **** 
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** **  *  *  ** **      ***** ***   * **  *  *   **   **** ** *** is not a prefix of %s",a,b);
******   ** *   *      *   
****** **  *** **   0;
}
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Hidden content!
#include * *  ** **** *
#include * *     *   

int prefix (char **** str2[])
{
 * *  **   *   *  * *  ** ** length=0,  **    **
  *   ** ***** * * 
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 *   ** * **  * *   **   else *****  * ** * 0; ** *       *      *
* *     * ** * *  *  **    * 
}
int main(void)
{
 *  *  * * **** ** ** * **         *  * *  *
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* *  * * **  ******* ** **   * * ********  *   ** ***** ****** * is a prefix of  ****  *  str1, str2);
 *   ****   * *  **  ** **  **  
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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)
**  ****  **   * *  **** *       
* *    ****   * **      ******  * * * * * ** * * **** *** **  * *  
*   *** *  * ********* ***** ** *** **** * * * * **   * 
***** *  *** *** * **      ******** ** ****    ** ***   **** * ** * *  * *   *   *  *    is not a prefix of %s", prefix, word);
** * *  *  ** **   * *  * ** *****   * *  * ***  *  * **  * ***      ***  * ** *  * *   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)
***   * **  *   * **   *  *
  * *  ***     *  **  *       ** ***  ***   * **** **  ***    ** 
*** ** *   *     * ***  *  * **  *   ** ** *  *  ** 
 * ** **   ** ** ** *  ** ** ** ****  **  ***** ** ***      *   *  *  * *     ** *****   *  ***    is not a prefix of %s", prefix, word);
* ** ** *     * *    * * *****    ****** * *****  *  **  * *** **  **   ***  *       0;
*** * *  ***     * **  * **  **   *   *  * * **   ** *   
* * *  ***   *****        
* ***   * *****   * *  *     **   *  is a prefix of %s", prefix, word);
 * * ***    *** *** ** ** 0;
}
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 * **    *   ** *  ** ***  
  *     ***        **  
***        **    **  * *  *

int main()
{
   ***     **   *   char  **    
*  *  ** ****** char  ** 
*  *****  ****  ** ** * *  *  *  *         word);
*  *   ***  int i;
*   ***   * * for(i = 0; ****      **   * * ++i)
 *** *    * * {
    *         **  * *  *  *  *   * * 
     *   ** *     * ** **  {
    * *   * * *    *  * **   * * *    *** *   *** ** * *  is not a * * of **  * *** *   * word);
 **     * ****    *  * ** *  *     **  *     *  0;
 ****   *  *    **  **  *  * ** }
***    **  ** * * }
*  *** ** **  * * * *         is a prefix of  *    *  *  * word);
  * **** * *   * *  * 0;
}
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