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