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()
{
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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)
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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];

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

** *** ***   ** *   * ***  **** ** == 0)
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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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  **** **   * *** *  ** * * * * ***** * *  *** *** *   ** ** **     *  * ** ****   **   ** ****** * 
**   * * *  *      ***** *    ** **** ** **   ******* *
}
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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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**  *     **  **       ***  *** *     ** ***** * * *       ***** ***   *   * *  *   ****   1;
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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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