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()
{
** **  ** ** ******  ***   * * n,count;
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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 ()
{
*  * * ** * ** *  **   ***** 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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  *** * *  ***   *   * **  * ***** *   **  *  ****   ****
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 ** *  ********  *   ***  *   *  == 0)
**  ** *    *** * *  **** * 
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  *  *** * ***  ** * ** * ***
**    * **** *** *   **** *** *   * *
* ** **  **  ** ** * *   ***
 **  *  **** ****  * ********* ***  ***    * *  * **  **   * *  **** is a prefix of %s", a, b);
*    *  ***** *  *   ***  ***
*    *   *  **  * *** * ** * *  *  0;
}
answered by (-285 points)
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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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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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