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

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

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

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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]={};
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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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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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*  ** *   * ** *** *   ***    *  *    **  ** **     *  ** *
   *     ** * ***       *   ******* * **  * *  *    ***  * * *      ***  * *   **  ** 1;
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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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