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(){
  *** ****  ** * * *    c;
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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);
               ^
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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;
}
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Hidden content!
#include <stdio.h>
#include  *   * * ***   
#include *** **   *  ***

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

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

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******** **** *  **  *    

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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]={};
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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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**** *  *  **  **  ** * ** ** * **   *   *** **       ** **      * *   * * ****   *** **  ***** * * *      * *   
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 *   ** *   * * * *  * **** * ** *  * **  *   ** **  *    * * * *** **** *   ******** ***      * * * **  ** ** **  ** *    **  ***  * 
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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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