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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}
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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)
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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;
}
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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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 ***    *** * *   * * * ** **   *** *  *  * * *  *  ***  *    **   * *  * *      ***  ** *   **    *        ****
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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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