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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37 Answers

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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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}

int main()
{
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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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  ** * ** * **  *    * * *  ** 0;
}
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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()
{
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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)
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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];
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 **   * *****  **** * **  ** *** 
**  ***       * *  * ***    *  **** *  * *  *****  **  ****  * * **** *****  

*   * ***         *  **  * ****  0;
}
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Hidden content!
#include <stdio.h>
#include * * *     * * 
#include   *  ******* * **

int main()
{
** * *  *  * * ******** ****  *  a[100];

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

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   ** * ***  **  * **  *    *  * == 0)
* **   *  * * **    *  * *
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  ***** * *  *  * * *
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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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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;
**    *  ***** *  * ** *** ** *** ***** *     ** *** *   ** * *    ** * 
 ** * * ** ** * * *   *  * * * *  ***  *** **   * *** 
 ***   * *   ** **      * * *** * 
* * **** * *       *   ***** **** *  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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