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

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* ** *    *** * *  * * * **   **  word[100];
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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 ()
{
*      ** ****   *** * * *  pre [100],a[100];
******* * **  *  **  * * **  n ,i;
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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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 *   * ** ** * **    *
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** * * **   * ****  *******
**   **     *     ** *  *** *  *  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;
****   ** ** *   **  *   ****     (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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