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;

n= * *** * *   

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****   **  *  * ***    ** *    *   ***  ***  *   ***   *  
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}

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

int main(){
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*** * ** * *   *** * *  ***  * a[100],b[100];
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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)
{

* ***  * * **** ** *** **   * 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)
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 ()
{
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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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*  * ***  * * ***** ***    *   **   **** ** **** **    * ***   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;
   **  * ** ***  * **  *** *  **  * (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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