Thread: code explanation

Code:

#include <stdio.h>
#include <time.h>
#include <stdlib.h>

#define SIZE 200

void sort(int *array, int size);
int rnd(int range);
void seedrnd(void);

void main()
{
 int number[SIZE];
 int x;

 printf("Here is the array unsorted and random.\n");

 seedrnd();
 for(x=0;x<SIZE;x++)
 {
                    number[x] = rnd(140)+1;
                    printf("%i\t",number[x]);
 }

 printf("\nPress enter to see the array sorted.");
 getchar();
 printf("\n");

 sort(number, SIZE);

 for(x=0;x<SIZE;x++);
                     printf("%i\t",number);
 }

 void sort(int *array, int size)
 {
 int a, b, temp;

 for(a=0;a<SIZE-1;a++)
                    for(b=a+1;b<SIZE;b++)
                                         if(array[a] > array[b])
                                         {
                                          temp=array[b];
                                          array[b]=array[a];
                                          array[a]=temp;
                                         }
 }

 int rnd(int range)
 {
  int r;

  r=rand()%range;
  return(r);
 }

 void seedrnd(void)
 {
  srand((unsigned)time(NULL));
}

i understand the first part but what does this do??--

Code:

void sort(int *array, int size)
 {
 int a, b, temp;

 for(a=0;a<SIZE-1;a++)
                    for(b=a+1;b<SIZE;b++)
                                         if(array[a] > array[b])
                                         {
                                          temp=array[b];
                                          array[b]=array[a];
                                          array[a]=temp;
                                         }
 }

 int rnd(int range)
 {
  int r;

  r=rand()%range;
  return(r);
 }

 void seedrnd(void)
 {
  srand((unsigned)time(NULL));
}

what does it all mean because i dont see any of it used in the actual randomizing and sorting the numbers. also, the \t isnt tabbing so it just looks like one big number, not a huge deal, but if anyone could tell me, thanks.

/sigh for some reason it wont show the sorted array correctly. the unsorted/random comes up fine...but once i press enter only about 10 numbers come up.

Code:

#include <stdio.h>
#include <time.h>
#include <stdlib.h>

#define SIZE 200

void sort(int *array, int size);
int rnd(int range);
void seedrnd(void);

void main()
{
 int number[SIZE];
 int x;

 printf("Here is the array unsorted and random.\n");

 seedrnd();
 for(x=0;x<SIZE;x++)
 {
                    number[x] = rnd(140)+1;
                    printf("%i\t",number[x]);
 }

 printf("\nPress enter to see the array sorted.");
 getchar();
 printf("\n");

 sort(number,SIZE);

 for(x=0;x<SIZE;x++);
                     printf("%i\t",number[x]);
 }

 void sort(int *array, int size)
 {
 int a, b, temp;

 for(a=0;a<SIZE-1;a++)
                    for(b=a+1;b<SIZE;b++)
                                         if(array[a] > array[b])
                                         {
                                          temp=array[b];
                                          array[b]=array[a];
                                          array[a]=temp;
                                         }
 }

 int rnd(int range)
 {
  int r;

  r=rand()%range;
  return(r);
 }

 void seedrnd(void)
 {
  srand((unsigned)time(NULL));
}

erg. any help would be awesome.

> void main()
main returns an int.
See the FAQ/previous replies

> for(x=0;x<SIZE;x++);
> printf("%i\t",number[x]);
Guess what that first ; means.

Also, is the code as crappily indented in your editor as it appears to be on this board?