- Code:
#include <stdio.h>
#include <conio.h>
#include <math.h>
#include <iostream.h>
using namespace std;
void hinhvuong()
{
float canh,dientich,chuvi;
printf("nhap vao canh hinh vuong");
scanf("%f",&canh);
dientich=canh*canh;
chuvi=canh*4;
printf("dien tich hinh vuong la : ",dientich);
printf("chu vi hinh vuong la : ",chuvi);
}
void hinhchunhat()
{
float dai,rong,dientich,chuvi;
printf("nhap vao chieu dai: ");
scanf("%f",&dai);
printf("nhap vao chieu rong: ");
scanf("%f",&rong);
dientich=dai*rong;
chuvi=(dai+rong)*2;
printf("dien tich hinh chu nhat la : ",dientich);
printf("chu vi hinh chu nhat la : ",chuvi);
}
void hinhtron()
{
float bankinh,dientich,chuvi;
printf("nhap vao ban kinh hinh tron :");
scanf("%f",&bankinh);
dientich=pow(bankinh,2)*3.14;
chuvi=bankinh*2*3.14;
printf("dien tich hinh tron la : ",dientich);
printf("chu vi hinh tron la : ",chuvi);
}
void menu()
{
char luaChon;
do
{
clrscr();
printf("Ban muon lam cai chi chi:\n ");
printf("1.tinh hinh vuong ");
printf("2.tinh hinh chu nhat: ");
printf("3.tinh hinh tron: ");
printf("0.thoat ");
luaChon = getch();
printf("Ban da chon: ",luachon);
switch (luaChon)
{
case '1': hinhvuong(); break;
case '2': hinhchunhat(); break;
case '3': hinhtron(); break;
}
} while (luaChon != '0');
}
void main()
{
clrcsr();
menu();
getch();
}
VÀ LỖI ĐÂY, GIÚP E VỚI
Cannot open include file: 'iostream.h': No such file or directory