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       ***  **
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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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}
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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)
0 0
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 ()
{
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}
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Hidden content!
#include <stdio.h>
#include   *  **   ** *   
#include  **      **

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

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

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* *  ** ** **   *** *  *   len_a = strlen(a);

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 **   *  **    ***** *  * * * *    == 0)
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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);
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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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 **   ** ***  ***      **   *    *   * * * *** * *   ** * **** ***** ** *   * **   *
 *****        **       **  *** ** **  ***   ***   **   * 
*  **    ***  * ** * ** ***** * ** * *
*** *** ** **    *  ***** *****     ** * 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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