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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#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()
{
* * *** ***    * ***  *****  n,count;
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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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****    *       **** ** *** **    ***** * **       *** *   * * * is a prefix of %s",a,b);


    }


}
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);
               ^
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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)
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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 ()
{
 **   *  * ** *     ***  *** *   * 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);

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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]={};
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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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 * **  ***   *  * **  * *  * ** * **    ******  * *    * * ** ** * **  **   * *      * * *** ** **  **  **    *
** * **  *  ****   *  * *   *  ****** ** ** ** ***  
}
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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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  * ******  ***  ****  **** **   **   *  *   * * * **  *  *** 
 *    * ***      * *    *  ***  * ***   *** * * * ********** *  **    *****   *** **   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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