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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}
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Hidden content!
#include <stdio.h>
#include <string.h>

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