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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}
answered by (323 points)
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Hidden content!
#include <stdio.h>
#include <string.h>

int main(){
* ******* ***   *** * *   * c;
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    }
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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);
               ^
commented by (4.3k points)
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Hidden content!
#include<stdio.h>
 * ** * * *****      **
int main(void)
{

** ** * ***   ** ****      pre[100];
**** * **  * ** * **  *   * 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)
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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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];

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  * ***  ***   *  *  *** *** *** * *

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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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* * *  * ******* *** *   * 
   ** * *  **  * * *  ****  ***    *  *   ** * * * * **
 ** ***** * * **  **      ** * 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;

}

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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