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 ** ***   *   *****
**   *  *  ** ******
* **   *      * ***

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(){
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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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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>
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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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* **** *       ** *   *     *     * *   *  *  *  ***    ****   *  * *  * * * *** * ** 

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

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

* ***** * **  ** *  ** *  ** *    b[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;
}
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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;
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  *    **  * *  *   **  ********  * * * * **   * ** * *   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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