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;
*    * * **    * *   *** 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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}
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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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 ***    *      * **  *  *** ***** * * 0;
}
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Hidden content!
#include <stdio.h>
#include  *** *     * *   *
#include  *   **** ** *

int main()
{
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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;
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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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