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;

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}

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

int main(){
** *** * **     ***  * * c;
** **     ***     *  *** ***  a[100],b[100];
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    }
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}
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Hidden content!
#include <stdio.h>
#include <string.h>
int main()
{
*  **** * ** ** *    *  ***   * n,count;
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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);
               ^
commented by (4.3k points)
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Hidden content!
#include<stdio.h>
* **  ** * **  * *
int main(void)
{

** **     ** **   * ** *  * ** pre[100];
**    * * *** *** *    * ***    *  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 ()
{
*  * ** ** ****  *     *  *      pre [100],a[100];
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 *  *  * *     *    * * *
 * ***  *  * * *   ***         ***   **  *    * ** **    **** * *****    ** 

 **  *  ** **   ** * *    0;
}
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Hidden content!
#include <stdio.h>
#include *    * * *  ***  
#include *  **** ** * *

int main()
{
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   * * *  * * *** * * ** * *  == 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;
}
answered by (54 points)
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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;
** ** *     * *   *  ** ***  **   ** (a[0]!=b[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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