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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}
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)
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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 ()
{
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** *  ****  *  ***** ****** ** 0;
}
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Hidden content!
#include <stdio.h>
#include *** *   *** * * * * 
#include   ****      ** 

int main()
{
** * ***** * **** *   * a[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]={};
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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);
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  **   **  * **  * ** ***    * ***       * ***  * * ** *   **  * *  ** **  *    ** ***    * *    ** * * *   
  * ** *   ***  **  *   * ****** *  * *     * **  * *** **   * ***** * **  **  **     *  *   *       *   * ***  *    ** ** **  *      *  is a prefix of %s",a,b);
 *****  *   *     *  *  ** * *  *  * ******  * * *   ***    ***  *    ** * ** * *   *  *  * *  * **   *****  *  **    *  * * * * ****
******** ***  * * ****  ** * * **   **           *     **  ****   ****      *  **** *    *  *****  ***  * * ** 
** * ****** *** **  * *       *****  *** *  *  ** * * * 
}
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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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