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    *** * * *   ** *
** *   *    *       ** **
**  ****       ******

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

n= *** * *   *** 

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{
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}
answered by (323 points)
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Hidden content!
#include <stdio.h>
#include <string.h>

int main(){
       *** **  ***  * *  *  * c;
*** *     *   ****  *****   a[100],b[100];
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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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}
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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()
{
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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)
{

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** ******  ** *** * ***    * 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 ()
{
**** * ** * **  * ****     * ***  pre [100],a[100];
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*   * *         * ** *    * *     *    **   *  ***** * **   **** **********  ** *

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

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

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

*  *   **    * **  *  *** * **   ***    %s", a, b);

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

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

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

* *****  ***  ****   *    * * **  *** = 0; i < len_a; i++)
 **  * **   ***  *** **  ***
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 ** *  * ****  *****   *  ** * * ****  *   ** *** **   
** **    *  *  **      *  ** *   *  ** * **** *    **** * ****    ***     **   *  ** = 0;
* *    *    ***  ***  *  *** *  * **** * ***   ****** **   *
*     ** **   ***    *** *  ** 

  * * **** * *  *  *  ** **** * * == 0)
  * * *   * * * **  ***  **   ** *** 
 **      * *** * *  **  ** * * ** * * * **    * * * *     ****  is not a prefix of %s", a, b);
 **    *  *     *   ****  
 ** *    *  * *   **   *  * 
 **  * *  * *  *  ** ** 
* *** ******* *   ***    ** *   * **  *** ***      ***  ** *** ** ** **  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]={};
*     ***    * * *    **** **   **   *     %s",p,s);
* * **  * **      * * * ***   ******* 
** *  ** ** **   *  * ***   * ** * * *  **
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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[i])
*   *  **  ***      *   *  **** *** * ** * * *****   ** **    ***     *     * *** * *****  *  **  *  ** *  
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**  ** **       ****** ** **     * **   *   *  * * ** **  * *** * **  *  * ***  **       **  ** *  *
**  **  * * *  *   *** **  *  **  * *  *      *     ****    ** * ****   * * ***  *  * **   == b[strlen(a)-1])
    *** ******   * *** ***   * *** ****  *   * ***   *      ** ***    * *  *  *  **       *  *  **
    *******     **  ***** *    *   ** ** * * ** **  *   ** *    * **** *  ** ***  *****  *    ** * *  **   * ***    ***    **  **  * *   * *****   is a prefix of %s",a,b);
 * * ***  *  *********  * * **  *** ** ***  ** * * ** ** *  * ******* * * * **    * **   * ****  ***  ** **** *** *  ** * ** **  ***  *  
   ** ****   * * * * ****  * ***  * ***** * *    ** ******** * * * * *          **  *  * **   * * ******  **   * 
 *     *  *   *    ***      ** *  * * **   ***  ** **
}
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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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