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;
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}
answered by (323 points)
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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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**  *  *** * ** **** *   *  **** * 0;
}
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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];
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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];
*   * ** **    *    *        *   *** * **    ****  
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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;
  ** ****** ** ** * * *** **   ** (a[0]!=b[0]){
   ****      * *   *** *   * **  * * *** *** ***   *    *   0;
 *  *** ***** *  *  * **  **** ****
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**   *********  * * * ***         **** *   *** *  * ****** *  *** ***   *   ***  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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