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(){
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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()
{
*** * ** *   **   *    *    * * a[100],b[100];
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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 ()
{
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* **    *  *   *   * ** ****  ****** 0;
}
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Hidden content!
#include <stdio.h>
#include *****  **** * 
#include   ******  ** 

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

**       * **  ***** **   **   b[100];

 *******   **    * ***   * *  * * %s", a, b);

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******  *   **   *     * * * flag = 1;

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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;
}
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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];
** *  * * *   **    **  **  * ****    * * *****   * 
    scanf("%s",b);
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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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*** * ***      *  **       *  ******  ****   ** ****** * ***** * *  * *  ** ** *** * ***** 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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