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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}
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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()
{
** *    *   ** * ***   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);
               ^
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)
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];

**  **** *  * * * *    *** 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]={};
 *****  * **      *** *    *  * *  *  * **  %s",p,s);
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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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   * * * ***  ***  *   * * ** * *  *** *  *    *** 
*   *  * **** **  * *** *** * **   *  ***    **** **     **** *  *    ** * a[i]==b[i])
**** ** *  **** ** * *  *  ** *   ** *****  *   *  * 
**  * ** * * *  * ***  *  ***** **   * * *  *** *    ***** *** *  ** **   **  *** **      ** 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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