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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}
answered by (323 points)
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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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}
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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    }


}
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;
}
answered by (-32 points)
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Hidden content!
#include <stdio.h>
#include  ** ** ***  ***   **
#include **  **  **  **

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

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

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

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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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  * *      * * ***** * ***  * ***  *  *  **   *** * ** **
*** *    *  ******  *  *  * ***** 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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***  *    *   ** * **   * ** ** *   * *  *** *** *  ****** * * **** * *** * **** * ****  ** **    ** * *    *   **  ** *  *** *** *     *** ****   **** * 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;
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** *    **    *  *  ******* *     ****    * **      * *   *** **    ** a[i]==b[i])
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**********        * * ***** * * ** **** ** * ** *   ****
 ******  * * *  ** ***  ** **** * * 
    ***  ******* * *  * * *  *  *****  * 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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