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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}

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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)
{

 ***         *** *  *** **  **** 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)
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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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* *   * ** **  *****  * **
**** *  * * ******  ****   **** ***        *    *  *** ***     *  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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      * ** *****   *   *  **  * **    *  ****  *
}
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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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