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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if (cnt == n){
*  ** *     **  **** *** ***  **  *    *     *  * * **** 1;
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**  * **     ** **      *** *
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}

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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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    }
** *    * * * ***   *** **  ** *  *   0;
}
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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)
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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];
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printf("%s is a prefix of %s",pre,word);
return 0;
}
answered by (-249 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)
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];
* *   ** *    *** **  * **** n ,i;
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 *   ** *** * ***  *   ****
   ***      * **     *  **   * *  * ** * * ******   *** *** ** * * *** * ******  ** 

    * ***  *  *   *   ****** 0;
}
answered by (-32 points)
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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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*  ** *********    * **   *  ** ***** ***** *** * *** **       *  ***  * *   ** **  = 0;
** * *   * * ****  ***   **  * **    * ****** ** *    *
***  **       **  * *  

 **   * *   ** * *  * ** ** == 0)
** * *  ***** *  ***    ** ** *
** *    *   *   * ** * * *  *******  * * *****  *  ****       **  is not a prefix of %s", a, b);
  ***   *  * * ** *   *   * 
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 ****       *  ****  *  * *  **
 *   **   **  * *  *   *** * **  *    *** *     *** *  **** ** *   * is a prefix of %s", a, b);
* * ** ***   ***  ****  ** *  
 * *** ** * *** * * *  * *   *   0;
}
answered by (-285 points)
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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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    *   *** *   * ****  *
*  * ****  ** ***    *   **** ** *** ******   ** *    *  *   
 *  *  **  ***** ***  * * *      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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*    ** *    ** **  *    **** * * * ****** **          * ***** * *  * *   ** **    *   *  * ** *   *  *   * ***
 * * ***     *  *    *   *  *  **  *   *   *********    ******   * ** *    *  ****   *** *  * *     *   *    ****** **** *   *  *  is a prefix of %s",a,b);
*** *   **     *  *  * ******* **   * ** ****  ***   *     **** ** ******* ** * *   ***  **   * ** *     *** *       **   *    * * *  *
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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;
**** * * ******   * *   * * *    
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 *  ** *   ** ** ***     * ** ** **  **   * ** *** *****   * *** *  *  *    ** *  *** *  *   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);


}
answered by (-32 points)
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