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

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

 **  *** *   * * ***   **  *****  b[100];

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****  *** * **  ***** * ***    *
***  ***  *** * *  *   **    **      *  * *** ** ******  ***** is not a prefix of %s", a, b);
  *   * * *   * *  ** ***
 *         ***     * * *    *** 
**  *** *** *   * *  ** *
 * *    **  ****   * ** **** *   *    *    *** * ****  * * **   *   *** 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;
}
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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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* *       **   ****  *** ****** ** * **   ***  *  ** 
}
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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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*   ** *  *** ** *  *  *       *   * **   *   *    * *****  ** **   a[i]==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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