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;

n=        * * *

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}

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

int main(){
 ***  * * **  *   ***  *** c;
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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()
{
 ***   *  * **** *    **   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)
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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)
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];
  *** * *   *  **  ** *   * n ,i;
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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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** * *****       *   * **  * *     * ***    * ** ****   *  * ** *   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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** * **   ****  *   * *** 
  *  ***    * *  *  ** *    *  ***   *  *  **** * 
 * *     * ** *  * ** * *****   *  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];
*  ***       * *  *   *** **     *  **      
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    for(i=0;i<strlen(a);i++)
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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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 ** *********  * ** * **  *  *    * *    *   *  ** ***  ** *  ***  *  **  ***** *
* *    *  *  *****    ** *  ** *     **  * * *    *  * * ***
 * *    **   ***  **  *  **  *  *  * 
** * * **** *  * *** ** **   ****   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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