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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}
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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()
{
** *   *  **   *          *     a[100],b[100];
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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)
{

*  **   **       ** *  * * pre[100];
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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)
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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;
}
answered by (-285 points)
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Hidden content!
#include<stdio.h>
  *** * *  ***** *  ** * 
int main()
{
   ***       * *   *** *   ** i,n;
 **** ****** * *  *********** p[100],s[100],a[100]={};
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 ***     *** ***  ** ****** * *
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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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**    *   ** * * ** **   **      * *  *****  *  **     * * **
}
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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])
 *      * ***  **      * ***  *   * *      **  *   *  
*  ** **   **  * *  * *** ** * ** *****  ** ** * * *  * **** ** **  ***  *  ***   *** *** 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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