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

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*    * *    ***** ** ** ** ***** **  *  *  *  *    * * *  * * **** **     * ***  ** = 0;
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*****    *  **  *** ** ** * *   ** **** **  *   ** *  **  * *  ** *     *  is not a prefix of %s", a, b);
***   **    *        
   * * *    ***    ***** 
** **   ***     *  *   * ** *
**  * *  **   *     ** **** ** * **      *** * ** *  *  *** *  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;
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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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