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[]){
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}
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Hidden content!
#include <stdio.h>
#include <string.h>

int main(){
**** *  *  * * ***  * **** ** ** c;
* * **   **   **   *      ****  a[100],b[100];
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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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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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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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   *      * **  ***    * 
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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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***  *******  **   **  * *   ** 
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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];
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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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**** **** * * * *  *   *   **      *   ****  *   * ****** *  0;
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  *    *  * **  ** *  *   *  * *  ***    ******  *    **** 
* *  ***    ****  *  *  * ** * *  * *** ****   * *  **** *  * ****  ** **** **  * * 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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