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;
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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* * *** **    *  ** **    ** * * a[100],b[100];
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}
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Hidden content!
#include <stdio.h>
#include <string.h>
int main()
{
* ** ** ** *   *     ***     n,count;
***  ****  ***  **********  **** ** * *    *** *  *** 
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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)
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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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*    *  * **      *   **     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)
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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 ()
{
  * ****  *  * *** * * **  *** ***** pre [100],a[100];
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*** ***** *   *      *  * * * * * **  0;
}
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Hidden content!
#include <stdio.h>
#include **   *** *   
#include    *   ** *****  

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

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

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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];
 **  * * * * * *****      **  *** *  ** * **  ** 
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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;
*** * ***    ** **        *  ** 
*  ** ** ** ** **  *  * **      *** *       *    *** 
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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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