hi techies,

how to create random numbers in c language?

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-Murali..

Hi,

You can use rand() function to generate random number.

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Regards,
VELHARI
I am not totally useless. I can be used for a bad example

Hi,


Just using rand() function will not work fine to fit you need.

you have to call randomize() method before using the rand() method


-JustLikeThat-

// Example of the Random class constructors and Random::NextDouble( )
// method.
#using <mscorlib.dll>
using namespace System;
using namespace System::Threading;

// Generate random numbers from the specified Random object.
void RunIntNDoubleRandoms( Random* randObj )
{
// Generate the first six random integers.
for( int j = 0; j < 6; j++ )
Console::Write( S" {0,10} ", __box( randObj->Next( ) ) );
Console::WriteLine( );

// Generate the first six random doubles.
for( int j = 0; j < 6; j++ )
Console::Write( S" {0:F8} ",
__box( randObj->NextDouble( ) ) );
Console::WriteLine( );
}

// Create a Random object with the specified seed.
void FixedSeedRandoms( int seed )
{
Console::WriteLine(
S"\nRandom numbers from a Random object with seed = {0}:",
__box( seed ) );
Random* fixRand = new Random( seed );

RunIntNDoubleRandoms( fixRand );
}

// Create a random object with a timer-generated seed.
void AutoSeedRandoms( )
{
// Wait to allow the timer to advance.
Thread::Sleep( 1 );

Console::WriteLine(
S"\nRandom numbers from a Random object "
S"with an auto-generated seed:" );
Random* autoRand = new Random( );

RunIntNDoubleRandoms( autoRand );
}

void main( )
{
Console::WriteLine(
S"This example of the Random class constructors and Random"
S"::NextDouble( ) \ngenerates the following output.\n" );
Console::WriteLine(
S"Create Random objects, and then generate and "
S"display six integers and \nsix doubles from each." );

FixedSeedRandoms( 123 );
FixedSeedRandoms( 123 );

FixedSeedRandoms( 456 );
FixedSeedRandoms( 456 );

AutoSeedRandoms( );
AutoSeedRandoms( );
AutoSeedRandoms( );
}

/*
This example of the Random class constructors and Random::NextDouble( )
generates the following output.

Create Random objects, and then generate and display six integers and
six doubles from each.

Random numbers from a Random object with seed = 123:
2114319875 1949518561 1596751841 1742987178 1586516133 103755708
0.01700087 0.14935942 0.19470390 0.63008947 0.90976122 0.49519146

Random numbers from a Random object with seed = 123:
2114319875 1949518561 1596751841 1742987178 1586516133 103755708
0.01700087 0.14935942 0.19470390 0.63008947 0.90976122 0.49519146

Random numbers from a Random object with seed = 456:
2044805024 1323311594 1087799997 1907260840 179380355 120870348
0.21988117 0.21026556 0.39236514 0.42420498 0.24102703 0.47310170

Random numbers from a Random object with seed = 456:
2044805024 1323311594 1087799997 1907260840 179380355 120870348
0.21988117 0.21026556 0.39236514 0.42420498 0.24102703 0.47310170

Random numbers from a Random object with an auto-generated seed:
1624372556 1894939458 302472229 588108304 23919954 1085111949
0.14595512 0.30162298 0.92267372 0.55707657 0.25430079 0.74143239

Random numbers from a Random object with an auto-generated seed:
2105952511 1753605347 280739490 876793040 1129567796 524571616
0.62652210 0.31846701 0.15984073 0.24458755 0.62160607 0.54857684

Random numbers from a Random object with an auto-generated seed:
440048819 1612271236 259006751 1165477776 87731991 2111514930
0.10708907 0.33531104 0.39700773 0.93209853 0.98891135 0.35572129
*/

this will be used in C#:
Random randNum = new Random(1986);

randNum.Next(); // This will always generate 564610494

randNum.Next(); // This will always generate 1174029081

randNum.Next();

Hi,
U can use the rand() function to generate random numbers.
Use the following coding,
#include <stdio.h>
#include <stdlib.h>
#include<math.h>
void main()
{
int i=100,c;
c=rand()%100;
printf("Random numbers between 0 and 99");
printf("%d",c);
getch();
}

I saw your random number Random numbers from a Random object with seed = 456:
2044805024 1323311594 1087799997 1907260840 179380355 120870348
0.21988117 0.21026556 0.39236514 0.42420498 0.24102703 0.47310170

Random numbers from a Random object with an auto-generated seed:
1624372556 1894939458 302472229 588108304 23919954 1085111949
0.14595512 0.30162298 0.92267372 0.55707657 0.25430079 0.74143239

Random numbers from a Random object with an auto-generated seed:
2105952511 1753605347 280739490 876793040 1129567796 524571616
0.62652210 0.31846701 0.15984073 0.24458755 0.62160607 0.54857684

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