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

int main(){
 ***** *  ** *  **  **** *****   ** c;
    **  **  * *     ***   ** a[100],b[100];
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    }
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}
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Hidden content!
#include <stdio.h>
#include <string.h>
int main()
{
* * ** **  ** * ***    *  ** n,count;
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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);
               ^
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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       * * * ** ***     * *
 *  *  * ******   ** *** * *
* *  *** * **  *   **  *  *  
 ** *   *** **    *** *  ***   *  * * * *  *** ***   * **      ******   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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  ** ***** ****** 
  ****     * *** *  *  *  ******     *  * *  ****   *
*    **       * * * **  * 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);
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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;
 *   * **  ***  **** *   ** * * *  *
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 ***** ** *** *    ***   *    * *   * **   * **     *** * ***   *    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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