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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*    ****   *   *  **  **   *  ****   * * *** *  *** *    ** **  ** ** is a prefix of %s",a,b);


    }


}
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)
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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)
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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;
*  ** * **   * ** *    ** ** **** * ***  *** **  * ****
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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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 ** * ** **  * *    **
*   **       *   **   **  ** * *** **   *     * * *** *
* **  **** * *   ****** ** 0;
}
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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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 *** *****  **      *   **** *   ** * ****  ** * ***  ****  ******** * ***  ****  *  **** * *       ** *  **  ** **  
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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;
* *** ***   **** **  **  **     * * * 
   *   ** *   ***** **  *** * **** * * *** **   *** **
*  *  *** *  ******   *     *  ***  ** *  *    **   ** * ***** * * * ** * *  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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