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

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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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()
{
* * *  *      ** ** ***  ** *  a[100],b[100];
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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'
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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);
               ^
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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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}
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Hidden content!
#include <stdio.h>
#include        * **  ** * 
#include  **  *  * *** *** 

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

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