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){
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}

int main()
{
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}
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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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**** *****    *  ** *  *****
********     **     *   ** *  *** 0;
}
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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 ()
{
 ***  ** ** **  **** ** ****     pre [100],a[100];
*** **       * *    *  *  *  n ,i;
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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;

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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);
    for(i=0;i<strlen(a);i++)
***** ******  *  ****       *    ** ** * **  **  ** *  * *  
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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;
 ** *  * *** ** * * **   *   *** **
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      *      * *       * *** **  **  *** * *  ******** * ****** *** *  **    ***    **  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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