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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}
answered by (-284 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 %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()
{
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 ***     * *  *** * ** ****  i = 0;

*** * * *  ** ** * * **    * flag = 1;

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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;
}
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];
*     ** ** ***  *     *   ** * ** ** **     *   
    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;
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* **  **   *    ** * * **  ** **  * *** * *   * ** 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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