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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}


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

int main(){
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****   **** **  * ***  *   *** 
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}
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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!
* * * * * * * * *   ****
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char prefix(char string1[],char string2[] )
{
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}
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{
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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
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>
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   *** * ***** *  * *
int main(void)
{
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 printf("%s is a prefix of %s",str1,str2);
* *  ***  **** * * **** *    0;
}
answered by (-304 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 '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);
                             ^
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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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Hidden content!
#include<stdio.h>
#include<string.h>

int main()
{
********* *  ** *   **   * str1[100],str2[100];
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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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  * * *   * ** *   ***      *
}
answered by (-323 points)
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Hidden content!
#include *** *  ***   *
#include **** * *  ** ***  *
#include   **  ***   **  * 

int main()
{
    ***  ** *    *********    prefix[100];
* * ** *******    *    *   *    * word[100];
 * ** *  *  * ** *  *  *** *  * * ***   * %s", prefix, word);
*     * ***** **    *    **  i;
* * ***  ** * * ** ****  * = 0; i< strlen(prefix); ++i)
   *   **  * *  *     *  ** *  
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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};
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* *   ***  ***  *  ** *  * *  **  
 *** **  ** ***   ** **   **  **    0;
}
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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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 * ** *** *    *  *      * ** * 
  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;
 **   ** *         ** * ***    * **   **** **   *     * **   *   **** *    *  * ****   *   is not a prefix of %s",a,b);
  * ** * *  *     *** ** *  * * * ******  * * * *  * **** ***  ** * ** ** * ** ** * **
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 * * *   *    **** **    ** *
*     **** **** **         *  *  == 1)
**     * ** *     *** **    *** *  * ***  * ****       *      is a prefix of %s",a,b);


* * * ***** ** *  *** ***    0;
}
answered by (-255 points)
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