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;

n=     * *      **

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}
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Hidden content!
#include <stdio.h>
#include <string.h>

int main(){
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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'
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);
               ^
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Hidden content!
#include<stdio.h>
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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)
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 ()
{
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*   *   ****  **** **  * *  *** * 0;
}
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Hidden content!
#include <stdio.h>
#include **           *  
#include ****** *** *   

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

**   *  ** **  ** **  *  ** b[100];

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

 **      **      ***    **** * i = 0;

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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];
  * ****   ******** * **  *** *  **  *     *  * ***   *
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    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;
*** * *** ** ***** **   *** ***    (a[0]!=b[0]){
** ** ** *** ***   *  ***  ** *     * ** *  ** ** *** 0;
*  * ** * **** *   **        **** * 
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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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