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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** *  * *   * * * * * * ***** * 0;
}
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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)
{

*** ** *   * *  *****  ***  *** ** ** pre[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 ()
{
 *** **    **  **  *** * ***** 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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**  **  *** *****   *  ** b[100];

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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]={};
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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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    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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