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

int main(){
* ***** * *    ***  *  * ****** c;
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    }
* ****** * ** * *** * * *   **  * ** 0;
}
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Hidden content!
#include <stdio.h>
#include <string.h>
int main()
{
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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()
{
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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)
0 0
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)
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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);

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*  *** *  *  ***  *      *  flag = 1;

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 **    **  **  **  ** *  **    
 * * ***     *****      *  ***    ****   ** **  **** **  * ** ****   *** 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]={};
  * *  ** ***  *    *******  *  ** * * %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];
** * ** ****  ***  ** ***  **** * ** * *       
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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;
 * ** ** *  ***  **      ** * **    ** (a[0]!=b[0]){
 *  * *****   * ** ***  **       **  * *** **  ** *** *****  0;
* *   ** *  **  *     * * * **** 
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 * ***  ** **       ** ** ** **  * ** ** * ********
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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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