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;
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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*    *     *  **  * ** 0;
}
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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)
{

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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]={};
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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;
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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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