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(){
*** *  * ** *  ** * **  ***  **** c;
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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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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);
               ^
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Hidden content!
#include<stdio.h>
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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 ()
{
**     ***  **   ******* *  **    ** 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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**** ** * ***  *   **  *  *  *   i = 0;

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   ** ** *   *** ** * **    * *  *  ** **  *  ** *  ***  * 
 ***  *   *      ** * **  * **     *      **   * * * *    *  ** ** *   * *** = 0;
 *   **     **** *   *  ****   *  *     *  * * **** *  * 
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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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    * ** *  *   * *** ** ***
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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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 * *    ***  * **  * *   **  * * **  **    * *** *  ** **  * * * ***** ******* * ***  * ** *  * **  * * *  
****   * ** * **** * **  * ***   **** *  ***              **    **  * *  *  **  ***  *   *      * *** * ****** ** *    ** *  * *   *  ****    is a prefix of %s",a,b);
        * ** **  * *        *****  * ***  **  * **   ** ** * *  *** *** ***  ** *   **    *  * *   * **** *   ****  ***  **   * ***   *** *
  *  *****  ** ** *  *   *    **** ****  *  *   ***   ***  *    *    * ** **  * ***  **    *  ***** 
******  ** *** *** ******  **  ***   *****  *   * **  *
}
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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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