Submission #1623330

---

Source Code Expand

#include<iostream>
#include<string>
#include<cmath>
#include<queue>
#include<map>
#include<set>
#include<list>
#include<iomanip>
#include<vector>
#include<functional>
#include<algorithm>
#include<cstdio>
#include<unordered_map>
using namespace std;
//---------------------------------------------------
//ライブラリゾーン！！！！
#define int long long
#define str string
#define rep(i,j) for(int i=0;i<(int)(j);i++)
typedef long long ll;
typedef long double ld;
const ll inf = 4523372036854775807;
const int inf2 = 1145141919;
const ld pi = 3.14159265358979323846264338327950288419716939937510582097494459230781640628620899;
struct P {
	ll pos, cost;
};
bool operator<(P a, P b) { return a.cost < b.cost; }
bool operator>(P a, P b) { return a.cost > b.cost; }
struct B {//隣接リスト表現
	ll to, cost;
};
struct S {//辺の情報を入れる変数
	int from, to, cost;
};
bool operator<(S a, S b) { return a.cost < b.cost; }
bool operator>(S a, S b) { return a.cost > b.cost; }
struct H {
	int x, y;
};
ll gcm(ll i, ll j) {//最大公約数
	if (i > j) swap(i, j);
	if (i == 0) return j;
	return gcm(j%i, i);
}
ld rad(ld a, ld b, ld c, ld d) {
	return sqrt(pow(a - c, 2) + pow(b - d, 2));
}//rad＝座標上の2点間の距離
 //---------------------------------------------------
 //+++++++++++++++++++++++++++++++++++++++++++++++++++
signed main() {
	ld xa, ya, xb, yb, xc, yc;
	cin >> xa >> ya >> xb >> yb >> xc >> yc;
	xb -= xa;
	xc -= xa;
	yb -= ya;
	yc -= ya;
	printf("%.100lf\n", abs(xb*yc - yb*xc) / 2.0);
	getchar(); getchar();
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:58:46: warning: format ‘%lf’ expects argument of type ‘double’, but argument 2 has type ‘long double’ [-Wformat=]
  printf("%.100lf\n", abs(xb*yc - yb*xc) / 2.0);
                                              ^

Judge Result