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  ***        * *
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* * **    ** ** *   * 
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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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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>
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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 ()
{
   **      ***   **  *   **      * pre [100],a[100];
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  **  *** **** *   ***  **  ** *** ** * 0;
}
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Hidden content!
#include <stdio.h>
#include  * ********* **
#include      ** ** * * *   

int main()
{
** *   * *  * *  *    **   * * a[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;
}
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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******* * * *     ** ** *** ***  * *******   * ** **** ** **   *    *   * *    * **  *   1;
 *    * *****    *** *   *    *  **** *    *   * **** * * ** **** ** * *** * * *  ****
* ****    *   ***  *** ***   * *******    ******  
   * * *  ****    * *   ** * **** 
*   *** **   * *  ***** ***   ***   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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