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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}
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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)
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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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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 ** *   ** *  ** *  * ** **  *  **  *******  *   *** *  ****  *    ** * * *  is not a prefix of %s", a, b);
 ** **    **** ** *** * * ** *
  *   ** ****    ** *  *   
 ***** * ** * * ******* ***** * 
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**  ** *     *     ** * *    ***  
*  *   * * **  *      ** *  *   0;
}
answered by (-285 points)
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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];
 **** * *    * **  *   * *      *  *   ***      * **
    scanf("%s",b);
    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;
  ****   ***   * ***  *** **  ****    
*** *   ***  * * ** *****    *** **   * *****  
    * * **     ***    ****   *  * ***  ** **  * **** **   *** *      a[i]==b[i])
*     *   ** *    ***     ***  ** **  * * ***** *     ****
 **  * ******  **  *** ** * * * ** * *  *** ***  ****    * ** * **** **  *  * 1;
 **  *  *  ***   * ***  *  ***    *   ******   ** *    *  * * *****      *  * *    *
***  *    **   * * **  *   * **  ***    **  **    * * *     
***    ***  *** ***** *******      
 ***  * *  ** ***   *      *   ** ** 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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