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#include<iostream>
using namespace std;
float chuvi(int a, int b, int c)
{
return a + b + c;
}
int main()
{
float a, b, c;
cout << "Nhap canh a: ";
cin >> a;
cout << "Nhap canh b: ";
cin >> b;
cout << "Nhap canh c: ";
cin >> c;
if (a >= b + c || b >= a + c || c >= a + b)
cout << "Ba canh vua nhap khong phai la canh cua tam giac";
else {
cout << "Chu vi cua tam giac la: "<<chuvi(a,b,c);
}
system("pause");
return 0;
}
#include <bits/stdc++.h>
using namespace std;
long long x,n,i,t;
int main()
{
cin>>n;
t=0;
for (i=1; i<=n; i++)
{
cin>>x;
t+=x;
}
cout<<t;
return 0;
}
Câu 1:
uses crt;
var a,b:integer;
begin
clrscr;
readln(a,b);
write(a+b);
readln;
end.
Câu 2:
uses crt;
var a,b,c:integer;
begin
clrscr;
readln(a,b,c);
writeln(a+b-c);
readln;
end.
Câu 3:
uses crt;
var a,b:integer;
begin
clrscr;
readln(a,b);
writeln(a-b);
readln;
end.
Câu 4:
uses crt;
var x,y,z:integer;
begin
clrscr;
readln(x,y,z);
writeln((x+y)*z);
readln;
end.
Câu 2:
#include <bits/stdc++.h>
using namespace std;
double a,b,cv,dt;
int main()
{
cin>>a>>b;
cv=(a+b)*2;
dt=a*b;
cout<<"Chu vi la:"<<fixed<<setprecision(2)<<cv<<endl;
cout<<"Dien tich la:"<<fixed<<setprecision(2)<<dt;
return 0;
}
#include <bits/stdc++.h>
using namespace std;
double a,b,c,s,p;
int main()
{
//freopen("DTTAMGIAC.inp","r",stdin);
//freopen("DTTAMGIAC.out","w",stdout);
cin>>a>>b>>c;
p=(a+b+c)/2;
s=sqrt(p*(p-a)*(p-b)*(p-c));
cout<<fixed<<setprecision(5)<<p*2<<endl;
cout<<fixed<<setprecision(5)<<s;
return 0;
}
Câu 1:
#include <bits/stdc++.h>
using namespace std;
double a,b,c;
int main()
{
cin>>a>>b>>c;
cout<<fixed<<setprecision(2)<<(a+b+c)/3;
return 0;
}
#include <bits/stdc++.h>
using namespace std;
long long a[1000],i,n,t,dem;
int main()
{
cin>>n;
for (i=1; i<=n; i++) cin>>a[i];
t=0;
for (i=1; i<=n; i++) t+=a[i];
cout<<fixed<<setprecision(2)<<(t*1.0)/(n*1.0)<<endl;
dem=0;
for (i=1; i<=n; i++)
if (i%2==0) dem++;
cout<<dem;
return 0;
}
Program bai1;
uses crt;
var CV ,a,b,c: real
begin
clrscr;
write('nhap chieu dai canh a =');
readln(a);
write('nhap chieu dai canh b =');
readln(b);
write('nhap chieu dai canh c =');
CV:=a+b+c;
writeln('Chu vi cua tam giac =' , CV);
readln
end.
program bai2;
uses crt;
var a,b: integer;
begin
clrscr;
write('nhap so thu nhat ='); readln(a);
write('nhap so thu hai ='); readln(b);
writeln('Tong =' ,a+b);
writeln('Hieu =' ,a-b);
readln
end.