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;

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}
answered by (323 points)
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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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Hidden content!
#include <stdio.h>
#include <string.h>
int main()
{
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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()
{
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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)
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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];
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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];

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

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

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

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

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 ** ******    *  * * * **** * *** *   * * *   
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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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**   ** *    **  **** **  *** *** **** *  * * ** **** 
 ** *** **  **     ** *** * * * *  
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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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   ***  *** **  ***  **    *     * *   ** **   *** ***  * *  *****   * *  * *****  * *    ***** **   **** ** * * * *     *  *    *  *
* *** ***  * *  *    *      * **    * **  ** ***  * **  *  **  *** *  *      * *    * *** *     *  *****   *      *   *
*** **** *    **** * *  * * ****       ** ***       **
}
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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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