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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}

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}
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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()
{
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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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* * * * * *  ***   **  ** **  **   **  ***     *
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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;
}
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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*  ** *    *** **** ** ** ****
**  *     ** **   *  *****
 *  **     ** **   * *    * * *
**** **     ****   ***     *    * * *    *   *   *****  * **    ** 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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    *  *    * * *  *  *** ***
  * *  *  *  *  * * ** **  ** *** *    ** *  *** ******  * ** *
**  ****      ***    ** ***  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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**   **  ******     *** *****  * * ***  **  *     ***       * * * *  *  **** *** *  **   * **  *  ** *  * 
*  *  * *  * **  ** *   * * * ***    **  *  * **  **
}
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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);


}
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