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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 ** *  *    *   ** ** 
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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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#include <stdio.h>
#include <string.h>

int main(){
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    }
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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)
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)
{

       * *   ** *   *  * * * *** pre[100];
  ***  * *** *** * *     * 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]={};
 ** *  *   * *     * * *  *   **** *  %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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  **   *    *****  *  * * *** * *  ** ***     *  *** * * * **** *    ***  * 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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