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;

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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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  *** ** * **       *    * * ** * 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)
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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)
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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];

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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];
 ***** **      *     **   *   *  **     *** * * 
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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;
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** * ** ***   * *** *    * *    *** * * **** * **  *  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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