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;

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{
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}
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Hidden content!
#include <stdio.h>
#include <string.h>

int main(){
*  *********** *** *** ****** c;
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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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}
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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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    }


}
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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)
{

**  *  ** *  * *  **   * **   pre[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 ()
{
* *  *    * ***** ** *   *  * * pre [100],a[100];
****    **          * **  ***  n ,i;
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**  ***** ** * **  *  ** ****  * *** ** *       *****   ***  *    * ** ** ** * *   *

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

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

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

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** * ***  *** **  *  *  *
   **   **  ** * ***  **  * ***   **     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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  ** ****   *       *   * ** *  * **     *** *** * *  * **   **    *  *  *  ** * *  **   ** *   * * ***  * ****** **  *  *     * * *       ***  ** **** ** * **  is a prefix of %s",a,b);
** *   *    *   *  ********   ** * * * ** * ** **** * **** ** *  *  * * *   *   ***  ****   **  * *     *   *   ***    ** *    *   **  **   ** ***
* *  *  *  ** *   * **** *** ******* * ******  * * **  * *  **  * *    **  *** **    *  * **  * *    **   ****   * 
  **  ******* **** *  *** *    *****  **   * *  ** 
}
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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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**  *   ***  * ******   ****** ***      *         ** ** *
** **  ** * * * * *  *   * ** ** *  *    **    ** ** ***  *** *    **  *  ****  **    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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