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 <stdio.h>
#include <stdlib.h>
#include <string.h>


int isprefix(char prefix[], char txt[]){
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** ***  * ***** *    ** *  **  flag;
}


char prefix[100],txt[100],i;

int main(){
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}
answered by (-286 points)
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prog.c: In function 'main':
prog.c:24:16: warning: too many arguments for format [-Wformat-extra-args]
         printf(" is a prefix of ",prefix, txt);
                ^~~~~~~~~~~~~~~~~~
prog.c:29:16: warning: too many arguments for format [-Wformat-extra-args]
         printf(" is not a prefix of ",prefix, txt);
                ^~~~~~~~~~~~~~~~~~~~~~
commented by (4.3k points)
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Hidden content!
 ** **   ** * **** ***
  * *** * * **    
char prefix(char string1[],char string2[] )
{
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}
int main(void)
{
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}
answered by (-168 points)
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prog.c: In function 'main':
prog.c:37:11: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[1001]' [-Wformat=]
   scanf("%s\n",&chaine1);
           ^
prog.c:38:11: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[1001]' [-Wformat=]
   scanf("%s",&chaine2);
           ^
commented by (4.3k points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
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Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
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Hidden content!
#include<stdio.h>
** ** *** **   **  **  
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int main(void)
{
** **   *   * **** **   ** *  str1[100],str2[100],i;
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 printf("%s is a prefix of %s",str1,str2);
**    * *  * *  *  * **** * **** 0;
}
answered by (-304 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 'int *' [-Wformat=]
     scanf("%s%s",str1,str2);
             ^
prog.c:6:15: warning: format '%s' expects argument of type 'char *', but argument 3 has type 'int *' [-Wformat=]
     scanf("%s%s",str1,str2);
               ^
prog.c:7:15: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     for(i=0;i<strlen(str1);i++)
               ^~~~~~
prog.c:7:15: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:7:15: note: include '<string.h>' or provide a declaration of 'strlen'
prog.c:7:22: warning: passing argument 1 of 'strlen' from incompatible pointer type [-Wincompatible-pointer-types]
     for(i=0;i<strlen(str1);i++)
                      ^~~~
prog.c:7:22: note: expected 'const char *' but argument is of type 'int *'
prog.c:10:23: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'int *' [-Wformat=]
             {printf("%s is not a prefix of %s",str1,str2);
                       ^
prog.c:10:45: warning: format '%s' expects argument of type 'char *', but argument 3 has type 'int *' [-Wformat=]
             {printf("%s is not a prefix of %s",str1,str2);
                                             ^
prog.c:15:11: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'int *' [-Wformat=]
  printf("%s is a prefix of %s",str1,str2);
           ^
prog.c:15:29: warning: format '%s' expects argument of type 'char *', but argument 3 has type 'int *' [-Wformat=]
  printf("%s is a prefix of %s",str1,str2);
                             ^
commented by (4.3k points)
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prog.c: In function 'main':
prog.c:8:15: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     for(i=0;i<strlen(str1);i++)
               ^~~~~~
prog.c:8:15: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:8:15: note: include '<string.h>' or provide a declaration of 'strlen'
commented by (4.3k points)
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Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
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Hidden content!
#include<stdio.h>
#include<string.h>

int main()
{
***  ** *    ** ** *** * *  str1[100],str2[100];
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    }
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 ***  ****** *** * * *  *   
}
answered by (-140 points)
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Hidden content!
# include <stdio.h>
# include <string.h>
 int main(void)
 {
  * * * ******** * *  ** *****  * *  * pre[100],str[100];
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**** *    *** ** *** ***  *   ** ****  *** *   *   *  * **  *  ***    * **  **
    }
    return 0;
 }
answered by (-281 points)
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Hidden content!
#include<stdio.h>
#include<string.h>

int main()
{
*** * **** ** ***  *  ** ** str1[100],str2[100];
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    }
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     *  **** *     ***   **  * ** * *  ***  * ****  * *    ***  is not a prefix of %s",str1,str2);
* * * ** ****      **    *   
}
answered by (-323 points)
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Hidden content!
#include * * ******** *
#include *  ** ********
#include   * * **  * * ** 

int main()
{
 * **  *** **  ** ***  * *****  prefix[100];
 *** * **   *  * * ** *  * **** word[100];
 **   ***  *       *  *  ** **  ** * %s", prefix, word);
 **    * ****    ******    i;
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     **** * * * * *  ** *   
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 *  ** **           *  *** * * ***  ******   * **  **
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 **   ******  *****    * * * **** *  ****  * * **    ** 
 *   *   ****** *  * *    * 
  *   *  * ****  ** * ** **** **  ** *  * is a prefix of %s", prefix, word);
* **** ** * *  * *** ***   0;
}
answered by (-254 points)
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Hidden content!
#include <stdio.h>
#include <string.h>
int main()
{
***   **********  * * * *** * n,count;
**** * * *     *      * * a[100],b[100]={0},c[100]={0};
*  **     * * ** **  **   * **   * ** * * %s",a,b);
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**  * * *    * **  **   *  *
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*   * ***** ** **** *  *   **
* *    **  * **** *   *    ***** *  * * ** **** *    *  
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 ** ** ** *     **  *** *** ****  *** * * * *******  ****** ** ** is a prefix of %s",a,b);
* ** * **  **  ** ** ***
  *    **** ****   **   *  * ** ** 
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 **   **      *** *** * **  * * *** *  *  *  * ***  *   **    * *  *     is not a prefix of %s",a,b);
 *   **** ** **     *   *  * **
   ***   **  *   **  **    * *   0;
}
answered by (-229 points)
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Hidden content!
#include<stdio.h>
#include<string.h>

int main()
{
 * ** ** *  ***  *     *  * * String[50],string[50];
***  *  **  *  * **      a,b=0;
** * ****   *   ** ****  * ** *     *    *
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    }
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 * ** * *  *  ** ****** *  
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     * *  * ** *****  **  * *
  return 0;
}
answered by (-107 points)
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Hidden content!
#include <stdio.h>
#include  ** *   **   ** * **
#include   **** ** *****

int main()
{
 *** ** ***  * *** * ****** **   a[100],b[100];
*  *      ****  *   *   ** ****** **  *   %s",a,b);
***    ** ** ***  * * ***  ** i,j,prefix = 1,len = strlen(a);
***    * *** ***       **** * * = 0 ; i < len ; i++)
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**   *  ** *  *  ****** * *       *** ** * *     *** 
*   ** ***   * *  *   *** ***    * * *** * ***      * * **   *    * * *****  * ***** = 0;
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***     * ***        * ***  *     * **    *    * *** *  *** *  **  ***** **  ****    *   
*   **  *     *       ** *    *****  ******  **   * ***** **

***  ** **   *   *** * * 
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  ****** **  ** *  *   **  ** * *  * *****    ** *      *** * *  *  is a prefix of %s",a,b);


*** * * ***** *** **   * * ** 0;
}
answered by (-255 points)
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commented by (4.3k points)
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