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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}
answered by (323 points)
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Hidden content!
#include <stdio.h>
#include <string.h>

int main(){
* * **    ** * *  **  ***  c;
**  *  *** *  *  **    * *  * a[100],b[100];
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    }
*  * ** *** * **    *** **  *     0;
}
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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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    }


}
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)
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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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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* **  * ****** *   *  * *   * * ** == 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]={};
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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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     * ***   *  *  *  **  * ****** ****** * *   * **  *** ***  * *** *        ** ***    ***    * **** **  * *  
****  *   *  *     *     ***  **     *** *  **  ***     *** **     *  ** *  ******   * * ** *   **  *  **    ***    ***  **** * *  *   *   *    *** * ****** is a prefix of %s",a,b);
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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;
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    ** ***     * *  *** ** ****  * * *    * *  *****          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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