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   **  ***** *
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*  *****  **  * *
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int prefix(char a[], char b[]){
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}
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Hidden content!
#include <stdio.h>
#include <string.h>

int main(){
 ***** * * *    **  * c;
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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);
      ^~~~~~
commented by (4.3k points)
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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)
0 0
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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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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 ** *****  * * * **   **   * 
 ** *    *****  *  *****    
* *     ****  **    *  ** * **  
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** ****  ** **  *** * ****  * *
**** ****  *   * *** * *  **** *  *** 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;
 ***** ***   *   ***    *    * * *  ** (a[0]!=b[0]){
* * ** *     *****  * ** *   * **   **   **          *** * * 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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