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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}
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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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** *  *  *  ***   *   ***     * 0;
}
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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'
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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];
*  ** * ** * * **    ** * n ,i;
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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;
    * ***   **  ** * * * * * **  ** *   *** **  *   * 
  *  **   *********  * 

      *   ***    * ** *** *  * == 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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*       *     *  * ** ***   ** *  *  
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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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 *** **  * *  ** *** *  **   * * * ** *  *   *   **** *     **  *  ***  *     ** **   **        *   ***  *** * 
 *  * *    **  *  **** *   * *   ***  * ****  *   * *    *        *** *  *** * *  *******  *  *   * ***  **    *  ***    *   ** ****  ** **  *** *  * * 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;
***     * ** * **  * *  * ** ** 
   *** *  *  **  ** *****  *  ***** *   * ******    *  *   
* * *    * * * *   ** * ** * *** * ***  *       *   ** * **    ** * 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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