Final Exam 2 (20%)

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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

 

[Exam] asked in Final Exam
ID: 42299 - Available when: 2018-01-17 14:00 - Due to: Unlimited
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Hidden content!
#include *  ****  ** *  
#include   ** ** ****   * 
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**  * * *     *** * 

int prefix(char a[], char b[]){
int i, j,n;
int cnt=0;

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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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    }
**** ***   ** *****  * * * **** 0;
}
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Hidden content!
#include <stdio.h>
#include <string.h>
int main()
{
*  ** ***  ***    * ** *  * n,count;
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}
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prog.c: In function 'main':
prog.c:8:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[100]' [-Wformat=]
     scanf("%s %s",&prefix,&word);
             ^
prog.c:8:16: warning: format '%s' expects argument of type 'char *', but argument 3 has type 'char (*)[100]' [-Wformat=]
     scanf("%s %s",&prefix,&word);
                ^
prog.c:10:15: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     for(i=0;i<strlen(prefix);++i)
               ^~~~~~
prog.c:10:15: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:10:15: note: include '<string.h>' or provide a declaration of 'strlen'
prog.c:18:6: error: expected '(' before 'printf'
      printf("%s is a prefix of %s",prefix,word);
      ^~~~~~
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Hidden content!
#include<stdio.h>
#include<string.h>
int main()
{
* ****  *  *    *   * ***     a[100],b[100];
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    }


}
answered by (-329 points)
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prog.c: In function 'main':
prog.c:5:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[100]' [-Wformat=]
     scanf("%s%s",&a,&b);
             ^
prog.c:5:15: warning: format '%s' expects argument of type 'char *', but argument 3 has type 'char (*)[100]' [-Wformat=]
     scanf("%s%s",&a,&b);
               ^
prog.c:7:8: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     l1=strlen(a);
        ^~~~~~
prog.c:7:8: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:7:8: note: include '<string.h>' or provide a declaration of 'strlen'
commented by (4.3k points)
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prog.c: In function 'main':
prog.c:6:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[100]' [-Wformat=]
     scanf("%s%s",&a,&b);
             ^
prog.c:6:15: warning: format '%s' expects argument of type 'char *', but argument 3 has type 'char (*)[100]' [-Wformat=]
     scanf("%s%s",&a,&b);
               ^
commented by (4.3k points)
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Hidden content!
#include<stdio.h>
***  **  *    *    ** 
int main(void)
{

***   ***  * * ** * * * ** ** pre[100];
**   *** * ********    *** * * *   * word[100];
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printf("%s is a prefix of %s",pre,word);
return 0;
}
answered by (-249 points)
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prog.c: In function 'main':
prog.c:8:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[100]' [-Wformat=]
     scanf("%s",&pre);
             ^
prog.c:9:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[100]' [-Wformat=]
     scanf("%s",&word);
             ^
commented by (4.3k points)
0 0
prog.c: In function 'main':
prog.c:8:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[100]' [-Wformat=]
     scanf("%s",&pre);
             ^
prog.c:9:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[100]' [-Wformat=]
     scanf("%s",&word);
             ^
commented by (4.3k points)
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Hidden content!
#include <stdio.h>
#include <string.h>
#include <ctype.h>
int main ()
{
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 **   ** * ****       * 
** * ** ** * * *****        ***   *  * * ** **   *** ***     * ***** *** *  ** **

 *  *** *  *    *   * *** ***  ** 0;
}
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Hidden content!
#include <stdio.h>
#include **      * ** * 
#include * * ***  ** **  * 

int main()
{
 *    *   * * **    **** **** *   a[100];

   ** * *     * ** *  b[100];

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 * * *  * **   ****   *  *** ** len_a = strlen(a);

 * **  * * * ***  ***  ** *** *  i = 0;

  ** *** * **   * *   ** flag = 1;

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***   ********     * **  ** *   ***  **  ** * **  ***     
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  *  *  * *  * ****   ** * *  == 0)
****  **  *******  ***  ** **
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********** ****    ** ***
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       * * ** * ** ****  
**   *** **** * *** ****     * * *   * *    *****  * **  ***** *       is a prefix of %s", a, b);
   * ******* * ** *  * ****** *** 
* * **      *   *  ** * * *    *  0;
}
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Hidden content!
#include<stdio.h>
* *  ** *** *  **      *   
int main()
{
  *  * *   * *** * *****  *     * * i,n;
  *   ***  * **** ***    * **  p[100],s[100],a[100]={};
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     **  * ** ***  *  **   *** * **
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  * *       ** *     *   *****  * **
*** ***  **  ** *  **   *  ***  *** ** *  * *  ****
**** *   ***  *  ** ** * ****   0;
}
answered by (54 points)
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Hidden content!
#include<stdio.h>
#include<string.h>

int main()
{
    int i;
    char a[100];
    char b[100];
* *  *** * * **  * * *  *  *  **    *   *  
    scanf("%s",b);
    for(i=0;i<strlen(a);i++)
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 * * ** ** ***  **  *** **  * ** *  * **** **  * ******** **     * ****   *    **  ** * == b[strlen(a)-1])
*  * ** * * * *      **** **   ** *** * *  *** ** *  *   ** * *****     *** **   *  * ** ***     *       
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    *         ***** *  ************  * * *      ** * * ***  *  *  * ***    * **  **       ** ***   ***  ** ** **     ***     ****** 
*** **  ***** *   *   *   * *** *    * *  *    *** **** ***  ** * *****      ****  * **   *   *****   * *    
    *** *   *     *  * ** *  ***** *  *  *  *** *** ** * **
}
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Hidden content!
#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#define n 100

int aa(char a[],char b[]){
**  **  * * ** ****   * **   * i;
* ** ***  *** ** *  *      **   ***  (a[0]!=b[0]){
*********  *   ****  ***   *  ***** ** *   *  **   *  0;
    * ***   * **  **  ****** *  ** *
*** *      **** **** *** * *   *  * *  ****** * 
*     *******  *  * **    * *** *   * ** * * **  ******* **    ***     a[i]==b[i])
*   *  *  *  *   **  * **    **   * *** ** ***** * * * 
  ****     *   * ** ** * *       * ** *    **  * *   * *  **  **     ****  * *  1;
  * *   * ***   ******     *  ***    ** * ** *** * **  *** *   *  **      * *  *  * *
* *  *** * ***** *   *    * *      ** * *   *  
*** ***    *          **    *******
*** **     ** **  ** *      * **  **  **   *  0;

}

int main(){
****  * *** ***  * ***  * * c[n],d[n],e[n];
   *    **        *** * * * i;
  ** *   ***  *  *     *  ** * *      * * %s",c,d);

*  *  * *   ** ***** **  ** **     ***
***** *    *****  ** **********   *    ** *  * * **   *   ******  **  *  is a prefix of %s",c,d);

    *  * * *  *    *******   
*       *    *** **   *** *   *   ***   *  ******   *  * **  ** is not a prefix of %s",c,d);


}
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