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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    }


}
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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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* ***** *   ***  * * *  ** * * 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)
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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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 ***    * ****** ** *   
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**  *   *   ****    *   **    ***
     *** ****  * ** ***  **** ***   ***  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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