0
Q:

How would you use qsort() function to sort an array of structures? 

Answer:



Q:

A source program is the program written in which level language  ?

A) Alpha Numeric B) High-Level
C) Symbolic D) Machine
 
Answer & Explanation Answer: B) High-Level

Explanation:
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2 51
Q:

What's the difference between the functions rand(), random(), srand() and randomize()?

Answer

rand()  returns a random number


random()  returns a random number in a specified range


srand()  initialise a random number generator with a given seed value


randomize()   initializes a random number generator with a random value based o time.

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Subject: Programming

2 527
Q:

How would you use the function memmove()?

Answer

#include "mem.h"


#include "alloc.h"


main()


{


      int area;


      char *dest;


      char src[] = "Life is the camera and you are the target"


                                  "so keep smiling always";


      area = sizeof (src);


      dest = malloc (area);


      memmove (dest, src, area);


      printf("\n%s", dest);


      printf("\n%s",src);


}

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Subject: Programming

1 585
Q:

What do the functions atoi(), itoa() and gcvt () do? Show how would you use them in a program.

Answer

atoi()         Converts a string to an integer.


itoa()         Convert an integer to a string


gcvt()        Converts a floating-point number to a string


 


#include "stdlib.h"


main()


{


      char s[] = "12345";


      char buffer [15], string[20];


      int i;


      


      i = atoi (s);


      printf("\n%d",i);


 


       gcvt (20.141672, 4, buffer);


       printf ("\n%s", buffer);


 


       itoa(15, string,2);


        printf ("\n%s", string);


}

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Subject: Programming

0 733
Q:

What would be the output of the following program?

main()

{

        char huge * near * far *ptr1;

        char near * far * huge *ptr2;

        char far * huge * near *ptr3;

         printf ("%d%d%d", sizeof (ptr1), sizeof (ptr2), sizeof (ptr3));

}

Answer

4  4  2

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Subject: Programming

0 458