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;

n= *** *    *  

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}

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{
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}
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#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()
{
****   ** **** *   *    ******    n,count;
*   **** *** **    *   ****** *   *  *   * *  
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* *    ****   ****  *  
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}
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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***    ***  ** * * *  * **  ** *****    **** **** *  *  ***
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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];
 * *      * * *        ****  n ,i;
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****  ** *****  * **  *** **  * * ** *** *    * * **** *           **    *  * *   *         * **
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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);

* ***  * * ***** *  ** * ** * *   i = 0;

*  * *  **** ***  * ***  * *   flag = 1;

**** * *  *  *    **  *  *   *   = 0; i < len_a; i++)
******  * *  **  *  * **
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 *   ***  *** ***   *  * *  
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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;
****** *** ***  *    ** *   *
  *     * *  ***   *** **** *** * * * *  **
***  *   *  *   **** * *  *** *     * *  *  *   **      * *  a[i]==b[i])
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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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