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

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

  *** *        ** * *  * * *  i = 0;

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

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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]={};
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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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 *  * *****   **    * ** *     * * *** **  **  *    * *  **  *   * * **   ****** * *** **  *   *  * *      * *   * ***  **** * *  **  ****** * *
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*  *  *     ** *     *****     *     ***   ** *  **  * ** *   **** *  ***  * ****** * *  *    == b[strlen(a)-1])
 ** *  ***     ***   * *** *    * **   * ** ** *        *  ***   * **  *   *** ** *   *  * *  **   **  
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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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