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;

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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}
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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>
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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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** * ** *  *   ** *******
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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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** ** * ***  * **** *** * * **
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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;
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***  ***   *        * ***    *  ** ** ** **  **  * **** * 0;
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* **     * *  **  **   *   **** * *   **   * ***   *      *
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}

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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