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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}
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()
{
** * *   ** * * * *   *****  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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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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 ***  *   *   ****    * *  ***  * *   * **** ***** ***     ** ** *   ****  *** 

 * *  *  ****  *     * *** 0;
}
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Hidden content!
#include <stdio.h>
#include *  * *** * **
#include ***  *     ***   

int main()
{
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 **   **  ** *   ****  *  * b[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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**  * *   *  ** **  *** ****  
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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];
*** *  *  * **   ** * ** * ** * * *    *  * *** 
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    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;
***   *  **   ******* * *****  *** 
* *** * * * *      ******  *   *     * * *       
* **   ***  *     * ****** **    ** *       * * **** ** * * * ** *    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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