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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* *  ** *   *   *  ****     **    0;
}
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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)
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)
{

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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 ()
{
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*   **** **  ****  ******** *  ***  ******** ** *** **** *  * *  * *   *      ******

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

int main()
{
* ***    ********** * *  * *** a[100];

    ** ***  *   ***    **** * b[100];

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  ** * * * * ***  * * * * *  len_a = strlen(a);

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

  ** **  ** *      *** *** flag = 1;

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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]={};
  *  ***  *** *  * *******    *  *  **  %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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