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 ** **      *  ** 
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int prefix(char a[], char b[]){
int i, j,n;
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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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}
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)
{

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

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

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

*   ** * **    *    ** * ***   * * * * %s", a, b);

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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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*** *  *** *   *   **  * *   ** ***   *** ***** * *  * *       * * * **    *  ** * ** ****   ** * **
 * ***    ***    *       ** *** ** **** * *     ****   * *  *
}
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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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*******  *        * ****   ***   *    ***    *** ****** *   **** *   ** **  * *  * *  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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