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

int main(){
  ** * * **    * * * ** *     c;
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**** * ** **** * * *  ** ** **  * 0;
}
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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>
  *  *** * ** * ** *  *
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]={};
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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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    ** *  *** * **    *  *   *     *     *  *** **   *   ** * ****      *        * **
** *** * ** *** * **   * *   **  *   * ** * * ****   * *
 *    *    ** *** * **  * *   *  *
 * **  *   *   *   *  *   ** **** ** 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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