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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#include <stdio.h>
#include <string.h>

int main(){
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**** *   **  **  **  *   **  0;
}
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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()
{
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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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*** * **   ** ** *   **  ***      word[100];
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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()
{
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 * *  *    *******   ** ** *  *  b[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]={};
 **  *    **  ** * **** * *** ****** %s",p,s);
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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];
 *   *      *** * * ** * * **** *   *  * *  ***  ***  **
    scanf("%s",b);
    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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  * * *  * * **** **** * ** ***  *    ** ***  **  * * 
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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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