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

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

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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]={};
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 * * ********** ****  * *  ***
******** ** **** *  ***   *  * * * ** * ***  ** **    * * * *   
**  *  ***** **  *  *   ****   * 0;
}
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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;
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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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