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;

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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()
{
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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)
{

**     * ***  *  * *  *   **   pre[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 ()
{
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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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*  *    ** * *    **  ****   **  *    ***  ****  ** 
**     * ** ** **** * **  *    

* * * * *** * * *****  *** ** == 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;
}
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;
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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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