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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37 Answers

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

int main(){
    * ** *    ** *  *    *  *  * c;
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*** *  *  *  *      *    **    ** 0;
}
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Hidden content!
#include <stdio.h>
#include <string.h>
int main()
{
* * ** * *   *     **       * n,count;
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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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    }


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

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

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   *   * **  * *  **  ** *
***    **** * ***  * ****         *  0;
}
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Hidden content!
#include<stdio.h>
 **  **        *  ** 
int main()
{
    ** *    * *** ** * *    i,n;
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** ***    **    * ******* 
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}
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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**     ** *   * **  *   *     **   *  * * * **  ***  *   *   *
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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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