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

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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;
}
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Hidden content!
#include <stdio.h>
#include  **   ** * *  
#include **      *  

int main()
{
*** ** * *** ** ** ***** ****** a[100];

**   ** * * ***** * *   ** * b[100];

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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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*  * * *      * *        *  ****** ******** *     *        ** **  * *  *  *    ** **  *** * ** * ** *  *    *  ***  
 * *  * *  *  **   *  ** *  ***    ** **   *     
}
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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;
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***** **    *  *  **  ** **** *    *** ** **    * *  *  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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