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);
               ^
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()
{
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* ********    *** *** * *  *  b[100];

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

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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];
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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);


}
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