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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37 Answers

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Hidden content!
#include * **  *   *  * **
#include    *     * **
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int prefix(char a[], char b[]){
int i, j,n;
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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()
{
  ** *  * * * **  * * **   *   ** n,count;
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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()
{
**  *** *   * ******     * * ** a[100],b[100];
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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)
{

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 ****  *   * *   ***  ** ** *      word[100];
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printf("%s is a prefix of %s",pre,word);
return 0;
}
answered by (-249 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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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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 **  * * *   **  *** **   *   * *   *    ***  ****** *   ** *       *    *
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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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**  ** *     ****** * *** * ****      **   ** *  * * * *
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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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       ***   ** ** * ***  *  *
 * **   * ******   * * **     * ** * * *** *  **  ***  **  
  ***   * **  *   ** * **   **  *  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];
 **** * * *  ** *  *    * *  *      *     **
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    for(i=0;i<strlen(a);i++)
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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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*  **   * * ** **  *  ***** *      *  **    * * **** ** *****  ****** ***  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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