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

int main(){
  * * **   *   ***  *    * *  c;
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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()
{
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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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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];

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

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

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

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**  **  ***   *        ** * * *  **   * ***      ***
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**  ***     *******  **    * 

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* ** *   **  **    **    **
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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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 ** ** ***  * *****  **   **    * **
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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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 ** * *  **** ******   * * * ** *** * *    ****   ********* * *     *  *  *   **** *  *  ***    *  * ***  **  *    ***  *  * *    *** **  is a prefix of %s",a,b);
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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;
***  *  * * *   **   *  **** *** ***  
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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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