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(){
 *** * * ** * *   **   *  * *    c;
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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()
{
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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)
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];
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  *  * * *    *    * *  **   **** * 0;
}
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Hidden content!
#include <stdio.h>
#include ******    ** *  ***
#include *  *   **   *   *

int main()
{
 ** ***    **   ****** *     *** a[100];

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 *  *     **  **     **  *** * len_a = strlen(a);

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******    **   * **   * **  *
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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;
}
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;
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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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