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;
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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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****** *  ****      ******* * 0;
}
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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)
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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 ()
{
* **       * *** * *  ** * * **** 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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 *  ** * *** * ** * *  **
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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];
*  *          *   * * *  *   **   * *** *  *  *** 
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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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*    * **** ** * *   *    ** **  **  *   *      *  * * *   * ****** *****   * **  
********    *     * **   **      *  * * *    ** ****
* *    *  ***  *  *  *  *** ** *
 *   ****   ***  *  *  ** **** ** * **  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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