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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}
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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);
               ^
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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)
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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()
{
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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];
       * ** ** *** *  *    * *  *****  * *
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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;
**  *     *   ***  **     *  **    *  *
*** * **** ** *  *    **** *  ** *  *  ** ****  
*** *   *     * * ** * *  * ** ** ** ***   *          *   * * a[i]==b[i])
 *  ***   * *  ****  *       **   *   * * **  *  * *  *
***  *   *     **  * *** * **    **   * *  *   *** ***** *   **     **   ** *  * * 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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