44 lines
958 B
C
44 lines
958 B
C
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#include <stdio.h>
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#include <math.h>
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struct point {
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float x;
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float y;
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};
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struct circle {
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struct point center;
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float radius;
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float circumference;
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float area;
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};
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struct circle read_circle();
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struct circle complete_circle(struct circle circle);
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int main(void) {
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struct circle circle;
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circle = read_circle();
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circle = complete_circle(circle);
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printf("Circumference: %f\n", circle.circumference);
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printf("Area: %f\n", circle.area);
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return 0;
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}
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struct circle read_circle() {
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struct circle circle;
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printf("gimme da circ (<x,y> r): ");
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char buf[256] = {0};
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fgets(buf, sizeof(buf) / sizeof(buf[0]), stdin);
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sscanf(buf, "<%f,%f> %f", &circle.center.x, &circle.center.y, &circle.radius);
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return circle;
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}
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struct circle complete_circle(struct circle circle) {
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circle.circumference = M_PI * 2 * circle.radius;
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circle.area = M_PI * circle.radius * circle.radius;
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return circle;
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}
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