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 **** *** ***   *
* * * ****  *    **
**  **   *** * *** **  **

int prefix(char a[], char b[]){
int i, j,n;
int cnt=0;

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int main()
{
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}
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Hidden content!
#include <stdio.h>
#include <string.h>

int main(){
***  * *  ******** *   **  * c;
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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'
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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);
               ^
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Hidden content!
#include<stdio.h>
**   * *  ** *   * **
int main(void)
{

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***   *** **  **** ***    *** *  *  word[100];
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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)
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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)
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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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}
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Hidden content!
#include <stdio.h>
#include ***    * * ****   
#include   **** *   *

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

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 * *  *    *  * ***  * ******    * **  *  *   **   ****  *     ** *  is not a prefix of %s", a, b);
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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]={};
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*  *    * *** * * ***   * ***
 *   ***** * ******** *   *     * *      * * * **** *
 *   ** *** **  *    **    *  0;
}
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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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** *  * **  *****     * * * ***  * **    *  * **  ** ** *  ****     * a[i]==b[i])
*  * ***** *  *  *** ** * **  *        **     *  ** 
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*   ***    ***  **  *   **      * *  **    *   *  *  *** *** *  * *  **** * **   * *
* * *****  *  *  **** *** *** **   *****    *  **   ***
***  * ** *   ***  *** * * **** 
****  * **** *  ** * * ** * * **  *  * 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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