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(){
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*  * *     ** **   **         ***  0;
}
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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)
0 0
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];

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 *  ******      **** *** * *  *  *  * * * * ***** ***   *  **   * *   ****      *** **      = 0;
***  *******    ******   *  **  ** *** ** *** ** ** * 
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 *   **    ***  ** **  ****
* * * * ** **  * *****  ** *  ** * **  ***  *   *     * * * * *  is not a prefix of %s", a, b);
* * * * *  *******    *  ** *** 
   *  **** ****  ***  ***  ** * *
*** *      ***    * ****  *
 * ****   * ** **  ******* ** *** *  *  *    ** *  * ** * ***  is a prefix of %s", a, b);
*       *** **  ** ******   *
** *****   *   ** **** **  0;
}
answered by (-285 points)
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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;
    ***  **       ***  **  * * **   (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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