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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37 Answers

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

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