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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}
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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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}
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)
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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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**** ** *  ** * ** **** ** *    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];

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**  *  ** **     ** *      i = 0;

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

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**  *  * * ***     ** * ** *  
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*   *  *  * ****     *  ** 
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 * **   * * **      
 *     * ** *   * *     * *** **  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);
    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])
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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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