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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}

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

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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];

*****   ***  *   **  *** ** ** *  ** ** %s", a, b);

** *******   ** *  ****    **  * len_a = strlen(a);

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

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

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  * *  * * ***  * ***  **
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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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 *** *   *** *     **  ** *** *    ** ****
  * *  *  * ** * ***  * * ** **   * **
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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[strlen(a)-1])
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***** **  *  * *  *   **  **** *   *  **** **   * *   ***   * * *  ** ***  **   *   **   * * ** *** **** ***    ***  ** *  * *   *  ***  *  is a prefix of %s",a,b);
* ***   * ** ** ******** *  **   *  * ** * *** ******   **  *  ** **   *       ** * * * **** * **  **    ** * ***** *  ******    **   ** **   
 **** ***        **   * **  ** ** * *     * ****   **    ***       ** **  *   * ** *********  *  ******* ****
 * **** ** **   *** **  *********  ***  *     *  *
}
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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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***  ** ***   * ***  *      *  *  *    *** *** * 
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  ** **   **  * **  * ***  ** *  * *  *  **  ** ****** *   * *          *  ***
*   *  ******   *****  *  *  ***** * ****  ** *** * 
   * *  *   *   **   *  * * ** *** *
     * * ***  **   * *  *   ****    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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