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;

n=  * *  * ****

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}

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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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*   **** * *    ** * ** 
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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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    }


}
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)
{

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

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

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

    ** **  ** *   ** ***** *   == 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]={};
 *** * *   *****  ** * *     *   ** ***   %s",p,s);
**  ** *       *     *** * ****** 
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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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 ***   **  * * *  *    *** ********  *** *     ** ****  *   *** *********  *  ****   **    **           *** * ***   ** ***  *  * ** ** ****  *   * *  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;
* *  ****** *    *** * *** ***  *
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* ****** *  ******     *    * **  **** ** *  * * ****   *  ** ***  *       a[i]==b[i])
* *  *******   *  * *      ** **  **** *  ***  **  **  *
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**   ** * ****  **  * * *    * * ****  ***   * *  **   *  ** *   *   ** ** * *   ** ** *
      * * **   ** * ******   ** *   * **   ** * ***   *
  *   *       ** *  * ** *** *  ****   *
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}

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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