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;

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

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

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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]={};
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***  *   *   ***** ***  *****     *
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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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 *  ** ****   ** * **  ** *   *** *  *  * ** ***** * ****  ** * *   * ** **  *  **  **  * *****   *       ***  ****   * * * * * * 
* *** * ******** * * * ***     * *  * *** *    *     **  * *      **   * *****    ***  * **   * ***  ***  
  * ** *   * ** ***** ***     ** * ** * * **** ****
}
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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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