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

*****  *   * * ****     *  ***        0;
}
answered by (-32 points)
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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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 **  *     * * ***** *   * **  * ***    ****  ********
 ** ** **** ***    *   ***** ***         **  * ** *** ** *   **  ***    * **  * ** *** = 0;
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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]={};
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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])
* *** *      * ***  * *  * *    ***   **   ** **   **** *   *      *  *   *****   **    *  ** ** **  *        
  ***   *    *** **** *  *    ***    **  **  *** *****   ******** ** *  * *** ** *** *   ** *** ** ***    *  ******    *      ** * *   * *** *  *** is a prefix of %s",a,b);
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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])
******  *   ***** ** ** ** ** *** * *  *** * *     * * 
  * ***    *** * *    * ** * * * ** *     * *     **   *****  * *** ** ** ** *  *  *   *** ** 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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