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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}
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
commented by (4.3k points)
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Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
commented by (4.3k points)
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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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Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
commented by (4.3k points)
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Hidden content!
#include<stdio.h>
#include<string.h>

int main()
{
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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()
{
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  *** *  *****   *** 
}
answered by (-323 points)
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Hidden content!
#include     *   **   * 
#include * **** * *   
#include   ***** **  *  *

int main()
{
*    *  ** ** ** * **  *    **** prefix[100];
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** *** ** *** *     *   ***  **** 0;
}
answered by (-254 points)
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Hidden content!
#include <stdio.h>
#include <string.h>
int main()
{
* **   **   *    * ***** *  n,count;
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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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  **  ***   ** *  * * * *** 
  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);
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  *   ******** **     * *  ** 0;
}
answered by (-255 points)
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