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(){
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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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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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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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*  *   *  * **  *  *
  ***   ** ***    *    *** * ** *    *  *****   ** *** ** *  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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 ***** *** * * * *  **    * * ***   ** 
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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]){
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 ** **** ** * ** * ** *** * **  *** **   ***  **    * *     *** **** *  *** **** ** 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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