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;
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}
answered by (323 points)
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Hidden content!
#include <stdio.h>
#include <string.h>

int main(){
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}
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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)
{

* *  *** * ** * *     * ** * pre[100];
** *  *   * ** *** *  *** *  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 ()
{
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**  *  *** ****  *      **** **     ***** **** * * ****** *   ***   *    **   *  * *   

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}
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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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 *  ** ***** *   *          * *
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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]={};
 **  ***      *** **  ****  ********* * %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];
*****  ** * **      ****    * *    *  ** *    *  *  *    **
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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;
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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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