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;
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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 ()
{
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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;
}
answered by (-285 points)
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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;
 ****  ***   *  *   *****   ****** *  (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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