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;
*     ***  **     **** **  a[100],b[100];
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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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    }


}
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)
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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 ()
{
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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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 *** *  *  ****   *   * *  = 0; i < len_a; i++)
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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;
}
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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****  ***  ** ** ** * * * * ****   *  **   * ***   *  *  **    ***  * * ***** *  **  * * != b[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;
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* ** **    **  ** * *** *** *  * *  * *  * ** ** * * *    * 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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