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

int main(){
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}
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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()
{
* * ***    ******  * *** *     *  a[100],b[100];
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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)
{

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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()
{
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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);
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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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