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;

n= *  * *   **   **

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int main()
{
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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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}
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Hidden content!
#include <stdio.h>
#include <string.h>
int main()
{
* **  ** * ** * *  ***      n,count;
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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)
0 0
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()
{
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*** *  * *******    * *   * b[100];

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**** *  **    * *****   *    i = 0;

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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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**** *  **    *  *    * ** **   ** ** * 
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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]){
 ***  ** ****   *   ** *****   *  * * ** ** ****  * *   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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