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

int prefix(char a[], char b[]){
int i, j,n;
int cnt=0;

n= * * *** * * **

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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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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)
0 0
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)
{

*   * *    ** ****   *   ***** pre[100];
** **** *  * * *** * * *  * * **** word[100];
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printf("%s is a prefix of %s",pre,word);
return 0;
}
answered by (-249 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)
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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 **** **   * * **  *  **     len_a = strlen(a);

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

**  *  * **  * ** ****  ******* = 0; i < len_a; i++)
**  * *   ** * **  *** **   *
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** * *   *** **  * *    *  * ** *** * ***  ** ***    **** * *** *
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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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 **  ****   * **  ** **   *  *  * **  *** ** *        * *    ****   *   is a prefix of %s",p,s);
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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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