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;
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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}
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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()
{
**  * * ****** ** **  * **  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)
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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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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**  *  **  *   * ***  ***   *    * ** *    * * ***** 
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*  ** *   * *    ***  ** * * * ** == 0)
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****  ******* **   * ****
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  * * *    ** * ** *   *  *    *
*** *    *    ***   **** ** ***  * ** * *  * * * * *** ** is a prefix of %s", a, b);
  ** ***  * **        ** **
 * ** **  *  **   ****** *    * 0;
}
answered by (-285 points)
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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);
    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]){
* *   ** * *** **  ***   *   * ** * * *   ***  * *   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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