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(){
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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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    }


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

int main()
{
*** *****  **  * * **** * a[100];

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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;
}
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;
*  ***********      * ** *  * **  (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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