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;
      **  ** * **  **** * * ** a[100],b[100];
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    }
***   ****   **   *  * **    **   0;
}
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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()
{
**  **** * * **** ****** * * 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];
*  * ** ***  * *    *  **  * ** 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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***     *  * ***   * ** * *
**  * * *  **  ****  ** * * *** * ** ****  **  ** * ***  ***   ** ** **      * 

* ** * ** **  *   *  *  * *   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;

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**  *** **     * ****    * ** **  ***     * * ** ** * **
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**  * *   * *** **** ** *   ***  **  == 0)
***  ***  ****  *** ** *
 ** ***** ***** * * ***    *   ** * * ** * ** *   ** ** *******   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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** * ** **   **** ***    ** ** *
* ***  * ****   **  * ** **  * ***  **   * *** *  * **  *
**  **  * ** ****     ***    ** 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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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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 *** * **  *    * ** *   * **      
****** *** **** ** **   ****      **** *      **    *
* * * ** *** * **   *** * ** **   ** *     ******  ***   * **     a[i]==b[i])
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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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