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(){
**  *   *** ***  ***  ** ** c;
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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)
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)
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];
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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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