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

int main(){
 * * ** * *** *****    ** ** **  c;
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    }
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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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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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*  *    * *** *** * ****** *** * 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 ()
{
**   ***    *** ***   ** *    * pre [100],a[100];
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* ****  * **  **  *     
 **** *  *  * **     *** *   **   *** ** * * *  ****  * * * * *  *****   *

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

int main()
{
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* *  ***    ** * ***   * *   i = 0;

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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);
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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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  *      * *  *  ** *  *****   *     ** *  *   ***   *
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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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