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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}

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

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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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 * * ****  * **    * **  ** *** *** *   ****** ***  *  * * ***  *  **   **  **** * * *******   ***
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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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 ******    *  * ***   ** ***  * *  ***   **  * ** * *  
 **  *** ** ***       *  *   *    *     *   *  * *  ** ***  ***        * *****  ** * 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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