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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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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}
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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);
               ^
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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 ()
{
  * **   ** ****   ** pre [100],a[100];
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*** * ****  ***** * **   *   
 *   **    * **** *    * ***  *     *   ** * ****     **   ** * *** *** * *    

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

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

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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];
   ** * **** **** **   *   *  * ** * **** *** *
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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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** * ****       **   **** *   ***  ******   **** * * 
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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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