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;

n= *   ** *  * 

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if (cnt == n){
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}

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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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    }
**  **** *  **   ** *   * *    * 0;
}
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Hidden content!
#include <stdio.h>
#include <string.h>
int main()
{
*   * *     * *  * *** * ** n,count;
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   *** **  * ** ** * ***  * * 0;
}
answered by (-284 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 %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)
{

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

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

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

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

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*    *  *   * ******  ** * ** 
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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];
**   * ****  * *   **  **  *  **  * * ****** ** 
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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;
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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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