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

int main(){
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***  * *   ** * ** ******* *  ** a[100],b[100];
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    }
*   **  **    ***   **  ** **** 0;
}
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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()
{
* *   ***   *   *  * * **    *  a[100],b[100];
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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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**   *  *** **   *** **  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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  *  *    *** ** * *****   **** **    * ***** * **     * * ****  ** **   *  *  * *** ** ** **   *  * * *  * 
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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;
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* **   * ***  * *     ** **  **** * * * **  ****  * * ***  0;
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  * ** ** * *** * * *** *******    *  * ****  * 
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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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