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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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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}
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)
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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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 *    **    ***   **  *  ** * i = 0;

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* *  *  * ** *  *  *   ** **   *   == 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];
    ** **    ** * ** **** *  * **          
    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]){
 *******   **   * **         ** *   ***** **** ***  *    ***   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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