rand

Name

rand, srand
- pseudo-random number generator

Library

libc.lib

Synopsis

#include <stdlib.h>

void srand (unsigned seed);

int rand (void);

Return values

The rand function never returns return the next pseudo-random number in the sequence.

The srand function never returns.

Detailed description

The rand function computes a sequence of pseudo-random integers in the range of 0 to RAND_MAX (as defined by the header file

#include <stdlib.h>).

The srand function sets its argument seed as the seed for a new sequence of pseudo-random numbers to be returned by rand. These sequences are repeatable by calling srand with the same seed value.

If no seed value is provided, the functions are automatically seeded with a value of 1.

The

Examples

#include <stdlib.h>
#include <stdio.h>
 
int main( void )
{
  int randArray[20];
  int i=0;
    
  while(i<20)
  {
        randArray[i]=rand();
        printf("\n%d", randArray[i]);
        i++;
  }
 
  return 0;
}

Output

#include <stdlib.h>
#include <stdio.h>
int main( void )
{
 int seedVal = 45454652;
 int randVal;
 srand(seedVal);
 randVal=rand();
 printf("Random Value returned is %d"), randVal);
}

Output

Random Value returned is 1599641479

Errors

No errors are defined.

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