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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    }
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}
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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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    }


}
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)
{

* *   ********   * *      * *  ** 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)
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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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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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  *    **    ** * * *******
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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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 ** *  **   ****  ** *    == 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]={};
 ***  ***  * ** * *****   * * **  *  * *  %s",p,s);
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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];
   ***    * *  **    * *** *** *  *        
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    for(i=0;i<strlen(a);i++)
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 **  * *  ** *  ***  **** **  *  *** ** * *  ** ***** *  **      *  ** *  * *   * *   * **   ** **   **  ******  
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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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 * **  * ***  ** ***  **  *********** *****  **   * **
**  **   *   *     * **    *  * * **  ******    *** * *  **** **  * ** ** * **  *   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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