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!
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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()
{
****  *****    *   * * *  *  * 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 ()
{
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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]={};
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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;
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   *** *  ********   * *  ***  ** **  *    ***   ***    * 0;
**  ******* **   ** *** ***** **
*   *** **   *    * * * *  *       * *   **  ******  
 * *  *** * *** *   ** *       * * ** *   **       *** *  *  a[i]==b[i])
*  *  *  **** * **  *  ** ** * **  **** **    ** ** *
** ****    *** *  *      * * ***** **** * * ***     * * **   *   *** ** *  * **** * ****     1;
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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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