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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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 ()
{
*  * *     ***  * *** ***  ** ** 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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    **  ** **  **   * * *** *** * ***** * * **    **** ** *  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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  *** **** ** ** *    **** ** **   * *   * *  ****   
}
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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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