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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}
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Hidden content!
#include <stdio.h>
#include <string.h>

int main(){
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*** **** *******  * *     ** 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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}
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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);
               ^
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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)
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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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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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*  ** * **    *  *  ** ***  * *   len_a = strlen(a);

** **    *   *** **  *  ** *    i = 0;

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** *  **   ** ** ** * ** * ** *****  ** *****    *
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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]={};
  *   * ******* ***** ********  ***** ***** %s",p,s);
** *  ***    * **   *  **  *  * 
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 *   * * **  * ****   ** *** *     
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* *  *  **  *   *  * * **  ** *
*** *** ******  *   ** * *** **  *   *     *  ** *  ****    * **
** ******    * *  *    ***** * ** * 0;
}
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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[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;
* **** *        *  ***** **  * *** ** (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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