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character1.h
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character1.h
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#pragma once
#include<iostream>
using namespace std;
namespace characterOne {
//设置小数点后n个数
void setPointNum(int n) {
cout.setf(ios::showpoint);
cout.setf(ios::fixed);
cout.precision(n);
}
//1-1求平均值,结果保留三位小数
void average() {
int a = 0;
int b = 0;
int c = 0;
cin >> a >> b >> c;
setPointNum(3);
cout << double(a + b + c) / 3 << endl;
}
//1-2华氏度转换摄氏度
void temperature() {
double f = 0;
cin >> f;
setPointNum(3);
cout << 5 * (f - 32) / 9 << endl;
}
//1-3等差数列
void sum(int n) {
int result = 0;
while (n > 0) {
result += n;
n--;
}
cout << result << endl;
}
//1-4正弦余弦
void sinAndCos(int n) {
assert(n < 360 && n >= 0);
cout << sin(n * 3.14 / 180) << endl;
cout << cos(n * 3.14 / 180) << endl;
}
//1-5打折
void discount(int num) {
double pay = 95 * num;
if (pay > 300) {
pay = pay * 0.85;
}
setPointNum(2);
cout << pay << endl;
}
//校验三角形
void checkTriangle(int a, int b, int c) {
assert(a > 0 && b > 0 && c > 0);
if (a + b <= c || a + c <= b || b + c <= a) {
cout << "not triangle" << endl;
return;
}
int aa = a * a;
int bb = b*b;
int cc = c*c;
if (aa + bb == cc || aa + cc == bb || bb + cc == aa) {
cout << "yes" << endl;
}
else {
cout << "no" << endl;
}
}
//极限值细节
void showDetail() {
cout << "max int:" << INT_MAX << endl;
cout << "min int:" << INT_MIN << endl;
}
}