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(){
*  * * *  ** * **  **  * ***** c;
* **** * *  * ** *    *    *** * a[100],b[100];
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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)
{

** ** * *  *        *    *  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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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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*   *  ***  ** *  * ****  flag = 1;

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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]={};
*     **  *       *      * * *** *   * %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];
   * *  *     ** *  ** *  * ** ******* ***** *****   **
    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);


}
answered by (-32 points)
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