Questions tagged [drand48]
The drand48 tag has no usage guidance.
6 questions
0
votes
1
answer
228
views
Understanding the generate.c function
I am trying to understand this code from the generate.c program:
for (int i = 0; i < n; i++)
{
printf("%i\n", (int) (drand48() * LIMIT));
}
I see that the drand48 function returns a ...
- 185
0
votes
1
answer
425
views
Does (drand48() * LIMIT) generates random numbers upto LIMIT?
(drand48() * LIMIT)
Does the above code in 'generate.c' file of pset3 mean that drand48 generates random numbers upto the value defined in LIMIT?
E.g -
#define LIMITS 234
drand48()*LIMITS
In ...
- 25
1
vote
2
answers
564
views
Best solution to move the ball in Breakout?
What's the best solution for providing proper parameters (x,y) for move() function?
"Move() function" we use it to move the ball in the Breakout game.
0
votes
1
answer
5k
views
implicit declaration of function 'drand48()' is invalid in c99 / generating random numbers
I'm now working on pset4 in edx. The spec requires that the velocity of the ball to be generated from a random number using drand48().
I looked at man drand48() saying this is a double type stuff, ...
- 63
0
votes
2
answers
348
views
pset4 velocity & ball's angle
I'm stuck in step 6. I have understood how to make the ball bounce on the window's edges but I cannot figure out how to make the ball move in an angle. I assume that it has to be some combination of Y-...
- 113
0
votes
1
answer
181
views
drand48() Invalid Operands
This is my code:
int min = 6;
int max = 9;
double x = min + (drand48() * 10) % (max - (min - 1));
Console Error message:
Any idea what I am doing wrong?
- 25