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

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

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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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    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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** ** **** ** *** **  * ** *   **    *  **   **    ******    *   ***  * *****     *
* *** ** *   *** *      ** **** ***  *** **  
** ***       ** ** ****** *  *    *  * *
**     ** **** **   *  ***   ** *   **   *  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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