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 * * *  *  * ****   
   * ** *     *   *  
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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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Hidden content!
#include <stdio.h>
#include <string.h>
int main()
{
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*  ** **  **** ** * ** *  ***  0;
}
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()
{
** * *  ****  *** * * ***** 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)
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];
*** * ***  * * *  *** * *  n ,i;
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**     ****  **   **    *   *  *  * ***  *     **      *  ** *  * * *** * * *  

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

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    ***   *    ** **  ** * **     * ***   *  **** * ** 
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*    * ** * *  ****    *   ** * *  == 0)
**  ***  ** *   * *  **  **
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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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** * **  **** * * *      **  * * ** **      *   *   *  *  * *  ** *   **   * * ******* * **    ***  * * *  **      *  * * ** **
  **** * * ****   ****    **** **** ***    * *  * * **  ** ** **  ***  ** **  *  *** *   **  *** ** * **** ****   *  
  ** *  ******* *  ***** **   ***  * * ****  ** *  * * *
}
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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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