35 lines
579 B
C
35 lines
579 B
C
#include <stdio.h>
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#include <stdlib.h>
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inline
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int randn(int m)
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{
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int rand_max = RAND_MAX - (RAND_MAX % m);
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int r;
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while ((r = rand()) > rand_max);
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return r / (rand_max / m);
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}
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int main()
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{
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int i, x, y, r2;
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unsigned long buf[31] = {0}; /* could just use 2d array */
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for (i = 0; i < 100; ) {
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x = randn(31) - 15;
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y = randn(31) - 15;
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r2 = x * x + y * y;
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if (r2 >= 100 && r2 <= 225) {
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buf[15 + y] |= 1 << (x + 15);
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i++;
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}
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}
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for (y = 0; y < 31; y++) {
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for (x = 0; x < 31; x++)
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printf((buf[y] & 1 << x) ? ". " : " ");
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printf("\n");
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}
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return 0;
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}
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