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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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>
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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];

* *   * **  *  **  ***  *** *    b[100];

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 ***        *    * **  * **   len_a = strlen(a);

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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]={};
   * * * **  *  *  *******   *    *  ** * %s",p,s);
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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;
* ** ****  * ***  * *  *      *  ***  (a[0]!=b[0]){
***     ** *  *    **       *  * * *  * *** *  ** *  *** ** 0;
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*** **     ***** *  * ** * *   *  * *** * ** ****  * ** **** **   ***     * 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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