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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}
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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)
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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 ()
{
****     ** ***  * *   * *   * 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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**   *******    * *        
 *  ****  *     *** *   * * 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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