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;

n= *** * ** *

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if (cnt == n){
***  ** ****  ****  *  ****   ** **      *    ***   *  * 1;
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* ** * ****  * *  *
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}

int main()
{
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}
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Hidden content!
#include <stdio.h>
#include <string.h>

int main(){
* *  *   **** ** * *   *  * * c;
  **** * * *   ****  * *  * * a[100],b[100];
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    }
 **    *** ***   *  **  ***   0;
}
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Hidden content!
#include <stdio.h>
#include <string.h>
int main()
{
* **  *      * * **   ** *  n,count;
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    ***   *** ***  ** **  * 
* * **  * * *  * * *** *       * 0;
}
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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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   * ****   **** * * *  **     * *  *  *    **  ** * *  is a prefix of %s",a,b);


    }


}
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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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 ****   *    * * *     *  **** 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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*  ******  ** *  *****  *  * n ,i;
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   * *     *   ****  ** **  *
 **    * * *   *   * *****   *    ** ******* *  *   ** ***** * *  **  * *   

**    * ***  * ** * ****  * 0;
}
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Hidden content!
#include <stdio.h>
#include  ***  *** ** ** 
#include **    * *    

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

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

* **  ******** **  ** ****** i = 0;

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

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 * ** * *  ***  *   ** * ***
 *   *  *  ****  ***  ** * ** ***   ** *     *          *  ** ** is not a prefix of %s", a, b);
***   * * * * ** *** ** *  ***
* *    * **  *  * **  ***** 
* *** * *  *   ** *  ***  ** * 
* **  * * * ** *** ** * ***  * **     **  *** *   *  *   *** ** 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];
   ** **  **** *****      *  **  *  **** **** 
    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])
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**   * ** ****  ** *** * ** *     * ******    *** **   *  *    ** *    ** **     1;
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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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