Submission #333500

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Source Code Expand

#include <stdio.h>

struct coord {
	double x, y;
};

int main(void) {
	struct coord a, b, c;
	double ans;

	scanf("%lf%lf%lf%lf%lf%lf", &a.x, &a.y, &b.x, &b.y, &c.x, &c.y);
	ans = ((b.x - a.x)*(c.y - a.y) - (c.x - a.x)*(b.y - a.y)) / 2.0;
	(ans >= 0) ? ans : ans = -ans;
	printf("%lf\n", ans);

	return 0;
}

Submission Info

Compile Error

./Main.c: In function ‘main’:
./Main.c:13:25: error: lvalue required as left operand of assignment
./Main.c:11:7: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]