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

int main(){
  * **  *   * *   **          c;
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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()
{
** **  **  **    **  ** *** *  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);
               ^
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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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 *   * **  *  *  *  **   *     **  *  ***  ** ** * * *** * ** * *  *  ** ** * ***  *  *

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

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

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

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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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*  *   ***  * *  *   *** **  *****      *  *** *     ** ** *  a[i]==b[i])
 *     **   *   * **    ** **        **   * *****   
** ****   *  *   *  ** *  *  **   * * * * **   *****   ****  ** * ** * * *  ****  **   1;
  **** *    * *  ***** * *** ***  *    *  ** * ******  *   ** ** *  **  *  ********* 
**   ****   * * *  *  **   *     ** *  **** * * ** 
 ***  *  **   *     *           * 
  ***  ***    * **  * ****  * * **    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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