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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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35
Task/Constrained-random-points-on-a-circle/C/constrained-random-points-on-a-circle-1.c Normal file
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#include <stdio.h>
#include <stdlib.h>
inline
int randn(int m)
{
int rand_max = RAND_MAX - (RAND_MAX % m);
int r;
while ((r = rand()) > rand_max);
return r / (rand_max / m);
}
int main()
{
int i, x, y, r2;
unsigned long buf[31] = {0}; /* could just use 2d array */
for (i = 0; i < 100; ) {
x = randn(31) - 15;
y = randn(31) - 15;
r2 = x * x + y * y;
if (r2 >= 100 && r2 <= 225) {
buf[15 + y] |= 1 << (x + 15);
i++;
}
}
for (y = 0; y < 31; y++) {
for (x = 0; x < 31; x++)
printf((buf[y] & 1 << x) ? ". " : " ");
printf("\n");
}
return 0;
}

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Task/Constrained-random-points-on-a-circle/C/constrained-random-points-on-a-circle-2.c Normal file
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