#include<conio.h>
#include<iostream.h>
void nhapmang(int a[],int n) //Nhap du lieu cho mang
{
for(int i=0;i<n;i++)
{
cout<<"Nhap phan tu thu "<<(i+1)<<" : ";
cin>>a[i];
}
}
int uscln(int x, int y) //Tra ve uscln
{
while(x!=0&&y!=0)
{
if(x>y) x=x-y;
else y=y-x;
}
if(x==0) return y;
else return x;
}
int main() //void main cung duoc, tuy chtrinh
{
int a[50], b[50];
int n; //So phan tu cua mang a[],b[]
//Vi so pt cua 2 mang bang nhau nen ta tao 1 bien chung
cout<<"Nhap so phan tu cua mang: ";
cin>>n;
cout<<"Nhap mang A: \n";
nhapmang(a,n);
cout<<"Nhap mang B: \n";
nhapmang(b,n);
cout<<"A ------ B ------ USCLN \n"; //Tao hinh dang bang hoac cot
for(int i=0;i<n;i++)
cout<<a[i]<<" ------ "<<b[i]<<" ------- "<<uscln(a[i],b[i])<<" \n";
getch();
}
Đoạn code có kiểm soát lỗi nhập vào
#include<conio.h>
#include<iostream.h>
void nhapmang(int a[],int n) //Nhap du lieu cho mang
{
for(int i=0;i<n;i++)
{
cout<<"Nhap phan tu thu "<<(i+1)<<" : ";
/* Kiem soat viec nhap phtu <= 0 */
do{
cin>>a[i];
if(a[i]<=0) cout<<"Nhap lai (a[i] > 0): ";
}while(a[i]<=0);
}
}
int uscln(int x, int y) //Tra ve uscln
{
while(x!=0&&y!=0)
{
if(x>y) x=x-y;
else y=y-x;
}
if(x==0) return y;
else return x;
}
int main() //void main cung duoc, tuy chtrinh
{
int a[50], b[50];
int n; //So phan tu cua mang a[],b[]
//Vi so pt cua 2 mang bang nhau nen ta tao 1 bien chung
/*Kiem soat viec nhap n( n>0 ), them vong do...while */
do{
cout<<"Nhap so phan tu cua mang: ";
cin>>n;
if(n<=0) cout<<"Xin nhap lai (n>0) \n";
}while(n<=0);
cout<<"Nhap mang A: \n";
nhapmang(a,n);
cout<<"Nhap mang B: \n";
nhapmang(b,n);
cout<<"A ------ B ------ USCLN \n"; //Tao hinh dang bang hoac cot
for(int i=0;i<n;i++)
cout<<a[i]<<" ------ "<<b[i]<<" ------- "<<uscln(a[i],b[i])<<" \n";
getch();
}