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;

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

int main(){
    * * ***   *** **   **  c;
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    }
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}
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Hidden content!
#include <stdio.h>
#include <string.h>
int main()
{
* ****  **     *   *  * *     n,count;
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}
answered by (-284 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 %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)
0 0
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 ()
{
*    * **   ** **  ***  ** pre [100],a[100];
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     ****  * *** **** * **   * *  ** ***  ***    *  * **  * * * *  * ** * ** *   *** *
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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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** * *****  ******      **** * *  *     * * *** **  *  *** 
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* * *   * * ** *     **      *** ** * ** *  *   *  * 
 **       ***  **    **  * * **

* *  **** ** *   ** * *** == 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);
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 * *      * ****    * ***   * ** ****** ** * **  *** *  *      *  **   *  **   *    ** * * *  *  *** * ***   * ** *  *** * ******   ***      **  *** **  ** 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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