内容专栏:【C/C++要打好基础啊】
本文内容:简单语法使用练习题(复习之前写过的实验报告)
本文作者:Melon西西
发布时间 :2023.2.10
目录
1、输入三个数判断能不能构成三角形,判断是什么三角形:
2.输入存银行的本金和存款年限(要求只能是1,2,3,5年,其余的非法),利用switch语句求到期时存款本金和利息之和。
3.百分制成绩转换为五分制成绩并显示在屏幕上。成绩转换规则如下:A对应90~100分,B对应80~89分,C对应70~79分,D对应60~69分,E对应60分以下。请用if-else语句和switch语句两种方法求解。
4.找素数一类
5.若员工月工作小时超过40小时,则超过部分按原工资的1.5倍的加班工资来计算。若员工月工作小时超过50小时,则超过部分按原工资的3 倍的加班工资来计算。
6.求解1000以内可以同时被9和11整除的所有整数,要求一行输出5个数据。
7.设计程序,用于统计三位数中,三个数字之和为奇数的数有多少个,并按八个数一行显示这些数,注意对齐。例如:124的三个数字之和是7
1、输入三个数判断能不能构成三角形,判断是什么三角形:
{double a = 0, b = 0, c = 0;
cin >> a >> b >> c;
if (a + b - c > 0 && a + c - b > 0 && b + c - a > 0)
{
if (a == b && b == c)
{
cout << "可以构成等边三角形";
}
else if (a * a + b * b == c * c || b * b + c * c == a * a || a * a + b * b == c * c)
{
cout << "可以构成直角三角形";
}
else
{
cout << "可以构成一般三角形";
}
}
else
{
cout << "不能构成三角形" << endl;
}
}
double money = 0; int time = 0;
cout << "请输入本金和存款年限,存款年限只能为1,2,3,5:" << endl;
cin >> money >> time;
double sum, bonus = 0;
switch (time)
{
case 1:
{
bonus = money * 0.0255 * time;
sum = bonus + money;
}
case 2:
{
bonus = money * 0.0279 * time;
sum = bonus + money;
}
case 3:
{
bonus = money * 0.0333 * time;
sum = bonus + money;
}
case 5:
{
bonus = money * 0.0360 * time;
sum = bonus + money;
}
cout << "总金是" << sum << endl;
break;
default:
{
cout << "数据非法" << endl;
}
}
int fenshu = 0;
cout << "输入一个分数判断等级:";
cin >> fenshu;
if (fenshu > 100)
{
cout << "请输入正确分数" << endl;
}
else if (fenshu > 90)
{
cout << "A" << endl;
}
else if (fenshu >80 )
{
cout << "B" << endl;
}
else if (fenshu >70 )
{
cout << "C" << endl;
}
else if (fenshu >= 60)
{
cout << "D" << endl;
}
else if (fenshu <60 )
{
cout << "E" << endl;
}
#include
using namespace std;
int main()
{
int fenshu = 0;
cout << "输入一个分数判断等级:";
cin >> fenshu;
int a;
a = fenshu / 10;
switch (a)
{
case 10:
{
cout << "A" << endl; break;
}
case 9:
{
cout << "A" << endl; break;
}
case 8:
{
cout << "B" << endl; break;
}
case 7:
{
cout << "C" << endl; break;
}
case 6:
{
cout << "D" << endl; break;
}
default:
{
cout << "E" << endl; break;
}
}
system("pause");
return 0;
}
int main()
{
int x=0;
cout << "输入一个数判断是不是质数 ";
cin >> x;
int t = 1;
for (int i = 2;i < x;i++)
{
if (x % i == 0)
{
t = 0;
}
}
if (t == 1)
{
cout << "是质数" << endl;
}
else cout << "不是质数" << endl;
return 0;
}
int main()
{
int a = 0, b = 0, big = 0, small = 0;;
cout << "输入要查找质数的范围 ";
cin >> a >> b;
big = (a > b) ? a : b;
small = a + b - big;
int t = 1;
int count = 0;
for (int j = small; j < big; j++)
{
for (int i = 2; i < j; i++)
{
if (j % i == 0)
{
t = 0;
}
}
if (t == 1)
{
cout << j << " ";
count++;
if (count % 5 == 0)
cout << "\n";
}
t = 1;
}
return 0;
}
int chazhao()
{
int a = 0, b = 0;
cout << "输入要查找质数的范围a>10,b<1000 :";
cin >> a >> b;
int t = 1;
int count = 0;
if (a >= 10 && b <= 1000 && a < b)
{
for (int j = a; j < b; j++)
{
for (int i = 2; i < j; i++)
{
if (j % i == 0)
{
t = 0;
}
}
if (t == 1)
{
cout << j << " ";
count++;
if (count % 5 == 0)
cout << "\n";
}
t = 1;
}
}
else
{
cout << "请重新输入a,b" << endl;
chazhao();
}
return 0;
}
int main()
{
chazhao();
return 0;
}
#include
using namespace std;
int main()
{
double time = 0, wage = 0, sum = 0;
cout << "Please input employee’s work time and wage_per_hour:";
cin >> time >> wage;
if (time != 10 && wage != 0)
{
if (time <= 40)
{
sum = time * wage;
}
else if (time > 40 && time <= 50)
{
double time2 = 0;
time2 = time - 40;
sum = 40 * wage + time2 * wage * 1.5;
}
else if (time > 50)
{
double time3 = 0;
time3 = time - 50;
sum = 40 * wage + 10 * 1.5 * wage + wage * 3 * time3;
}
cout << "The employee’s wage=" << sum << endl;
}
else
{
cout << "程序结束" << endl;
}
return 0;
}
#include
using namespace std;
int main()
{
int count = 0;
for (int i = 1; i < 1000; i++)
{
if (i % 9 == 0 && i % 11 == 0)
{
cout << i << " ";
count++;
if (count % 5 == 0)
{
cout << "\n";
}
}
}
return 0;
}
#include
#include
using namespace std;
int main()
{
int g = 0, s = 0, b = 0,a=0;
int count = 0;
for (int i = 100;i < 999;i++)
{
g = i % 10;
s = i / 10%10;
b = i/100;
a = g + s + b;
if (a % 2 != 0)
{
cout << i << "的三个数字之和是"<