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!
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int prefix(char a[], char b[]){
int i, j,n;
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}
answered by (323 points)
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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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}
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)
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 ()
{
 * *****   *** *  **   *    pre [100],a[100];
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 * * *    *     * *****   *   0;
}
answered by (-32 points)
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Hidden content!
#include <stdio.h>
#include     *      ** *
#include  * * * *     * * 

int main()
{
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 ** * *   *  **   * **   len_a = strlen(a);

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 *   ** * *** *  ******* 
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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]={};
 **  *   ** * *   * ** * *   ***** ** %s",p,s);
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***  * * *** ** 
****  * **** **** * *  *** ****      *** ** * ** *  * 
  *** ********    *       **  0;
}
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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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 **** * ** *  **  *** *     *    * *  ******** * ****   ******* ***  *  ***** ** *** ** * * *  ** ******* ***   **  *** **  *   **   *  *** *   is a prefix of %s",a,b);
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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);


}
answered by (-32 points)
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