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 *** *** * *     * 
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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(){
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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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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;
}
answered by (-32 points)
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Hidden content!
#include <stdio.h>
#include    ***  ** * ***
#include  *     *  * * ***  ** *

int main()
{
 ***   ***       **  ** *** ** a[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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    for(i=0;i<strlen(a);i++)
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 **  ** * *** ** * * **** *** * * **  * * ***  **  * * * ***  **** * ** *  **** ** ** *** ****    == b[strlen(a)-1])
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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])
       ***   *    **  **  **    * * * ** *  *   ** **   
   * ** **  *  ***  ** **   * *****  ******* *    *** *   * ***    ***  *   * * **  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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