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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}
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Hidden content!
#include <stdio.h>
#include <string.h>
int main()
{
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** *  * * * ********   * * ** * 0;
}
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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);
               ^
commented by (4.3k points)
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Hidden content!
#include<stdio.h>
**   * * * ***  ****   
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)
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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****        *** **  ** ***** 
*  *   ** ** **** *     ** *  **  * ** *  * ***** *****  * **  *  *******   ****  

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

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

**   *     * * * *   *****  *** **  b[100];

  * *  ** **  ****  ****   *** * *   %s", a, b);

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

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

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* * *  ** **  **  * ** ****     * == 0)
  **   * ****** ***  *   *
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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;
}
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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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    *  *  **  *    **   ** ** ** * * *******   ** *   * **** *  **     **    ** * *** ****  *  ** *** * **  **** * *** **       *  *  ****** 
    * * * *   **   ** * *** *     **  * ** *  *     **  * *  *   * *****   * ****   ***** * ** * ** * *** **
  ** *** * ** *   **  * ** * ***    * ***  * *****
}
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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;
 *     ***** * * ***** * *   
** *  *  **     ****      *  *  * * * ****         **  
  *** *    **  * *     ***  *  *   **        * * *** *****   ** 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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