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;

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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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}
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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>
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int main(void)
{

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****  * * ****** *  *  *  *    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)
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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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**  ***   *    *  * * *** *** * * ** ** *  *  *  ** * ***  * **** ** * * 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;
}
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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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*  *   *  *** *   ** **   * **    **     * * *   ****** ** **   *****   * * **  * * *  ** *  *** *** * 
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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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  *****    *    ** ** ** *** * *  ** *  * *****  * * * 
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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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