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(){
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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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}
answered by (-284 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 %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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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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**  **** *  ***      ** **  ** 0;
}
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Hidden content!
#include <stdio.h>
#include   *     ***   * * 
#include *       *  **

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

**    * *     *        * *** * b[100];

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* * *  *     * **   *      *
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**  ** *  ****   ** **  * 
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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];
 **** * **  ** * *  ***    ** * ** * * **** ***
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    for(i=0;i<strlen(a);i++)
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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]){
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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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