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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}
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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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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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 * **** ***** * ***   **    * 
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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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*  ** *     ** ** *  *  * ** 
*  *** * *   * * * *  *** ** *** 
 ** ** *   ****     **   *** *
  * ******  * *     * * *  *    ***   *   *******  ** * * * *  ** *  *  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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  * ** *    ** *** **  *****  *
** **      ** *** * * *    *   ***    ****   * ***  *
 **** *    **** ****  ** * **  **  * * 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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