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

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

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*        * * ** * * *  *      *  len_a = strlen(a);

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**  ** *   ** *    * * * *     flag = 1;

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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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 *  * *** *** ***** *   **
 ***   *** ***  **     * **  ** **   **     *  ** **        * **
 **  **** *  *** * * *   *  ** *** 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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* ** * *  ** *   * *   *  **     *  *** ** * **  ** * **      *
****  *   ***  * * *     *    * ****  ** *   **  **    * **   ** ***   **   *     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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