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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}
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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()
{
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}
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()
{
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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 ()
{
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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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 * ****   * **** **  ***   ** ******   * ***  **** **  * ** *  *** *  * **      *   == b[strlen(a)-1])
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******  * ** ** * * ****      *****  ** ** *  ** *  *  ***  ** ** * **   ** *   **  * ***  *    *  * * **     *****  *  * ** *        * **  * * **  ** is a prefix of %s",a,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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