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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}
answered by (323 points)
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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()
{
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}
answered by (-284 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 %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)
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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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 * * ***   **  **** ** *  ** *  *
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 *   *  **     *  * * * * * ** **
 ******** *   *   * * * *     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;
}
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;
 *** ** ** *****  *  ******    *  (a[0]!=b[0]){
** **   **    *   *  * **** **  ** ****  ***  ** * ****  *  0;
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* *** * *     ** *****    **   ** *  ** * **  *  *    **      *** a[i]==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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