Bài viết còn nhiều thiếu sót, rất mong sự đóng góp chỉnh sửa của các thành viên và cộng đồng
Code:
#include<iostream>
#include<conio.h>
using namespace std;
int i,j,n,a[100][100],b[100],maxd,x,dem=0;
void Nhap()
{
do
{
cout<<"Nhap so luong phan tu n= ";cin>>n;
if(n<0||n>100)
cout<<"Nhap lai!: ";
}
while(n<0||n>100);
for(i=0;i<n;i++)
for(j=0;j<n;j++)
{
cout<<"Nhap Phan Tu a["<<i<<"]["<<j<<"]= ";cin>>a[i][j];
}
}
void InNhap()
{
cout<<"\n Mang vua nhap"<<endl;
for(i=0;i<n;i++)
{
for(j=0;j<n;j++)
cout<<a[i][j]<<"\t";
cout<<endl;
}
}
void demx()
{
cout<<"\nNhap x: ";cin>>x;
for(i=0;i<n;i++)
{
for(j=0;j<n;j++)
if(a[i][j]==x)
dem++;
}
cout<<"\n"<<x<<" xuat hien "<<dem<<" lan.";
}
//tong cac phan tu
void Tongpt()
{ cout<<"\n\nTong cac phan tu= ";
int tong=0;
for(i=0;i<n;i++)
for(j=0;j<n;j++)
tong+=a[i][j];
cout<<tong;
}
//tong hang
void Tonghang()
{
cout<<"\n\nTong cac hang lan luot la: ";
int tongh,demhang,x;
for(i=0;i<n;i++)
{
tongh=0;
for(j=0;j<n;j++)
tongh=tongh+ a[i][j];
b[i]=tongh;
cout<<"\ntong hang "<<i+1<<"= "<<b[i];
}
maxd=b[0];
demhang=1;
for(i=0;i<n;i++)
{
if(b[i]>maxd)
{
maxd=b[i];
demhang++;
}
}
cout<<"\nHang "<<demhang<<" co tong lon nhat va = "<<maxd;
}
//tong cot
void Tongcot()
{
cout<<"\n\nTong cac cot lan luot la: ";
int tongc,maxc,demcot;
for(i=0;i<n;i++)
{
tongc=0;
for(j=0;j<n;j++)
tongc=tongc+ a[j][i];
b[i]=tongc;
cout<<"\ntong cot "<<i+1<<"= "<<b[i];
}
demcot=1;
maxc=b[0];
for(i=0;i<n;i++)
{
if(b[i]>maxc)
{
maxc=b[i];
demcot++;
}
}
cout<<"\nCot "<<demcot<<" co tong lon nhat va = "<<maxc;
}
//tong cheo chinh
void Tongcheochinh()
{
cout<<"\n\nDuong cheo chinh la: ";
int tong=0;
for(i=0;i<n;i++)
{
tong+=a[i][i];
cout<<a[i][i]<<" ";
}
cout<<":Tong= "<<tong;
}
//tong cheo phu
void Tongcheophu()
{
cout<<"\n\nDuong cheo phu la: ";
int tong=0;
for(i=0;i<n;i++)
{
tong+=a[i][n-i-1];
cout<<a[i][n-i-1]<<" ";
}
cout<<":Tong= "<<tong;
}
//tong tam giac tren phai
void Tongtamgiactrenphai()
{
cout<<"\n\nTam giac tren phai la: ";
int tong=0;
for(i=0;i<n;i++)
for(j=0;j<i;j++)
{
tong+=a[j][i];
cout<<a[j][i]<<" ";
}
cout<<":Tong= "<<tong;
}
//tam giac duoi phai
void Tongtamgiacduoiphai()
{
cout<<"\n\nTong tam giac duoi phai la: ";
int tong=0;
for(i=0;i<n;i++)
for(j=n-i;j<n;j++)
{
tong+=a[i][j];
cout<<a[i][j]<<" ";
}
cout<<":Tong= "<<tong;
}
//tam giac duoi trai
void Tongtamgiacduoitrai()
{
cout<<"\n\nTam giac duoi trai la: ";
int tong=0;
for(i=0;i<n;i++)
for(j=0;j<i;j++)
{
tong+=a[i][j];
cout<<a[i][j]<<" ";
}
cout<<":Tong= "<<tong;
}
void Tongtamgiactrentrai()
{
cout<<"\n\nTam giac tren trai la: ";
int tong=0;
for(i=0;i<n;i++)
for(j=0;j<n;j++)
{
tong+=a[j][n-j];
cout<<a[j][n-j]<<" ";
}
cout<<":Tong= "<<tong;
}
int main()
{
Nhap();
InNhap();
demx();
Tongpt();
Tonghang();
Tongcot();
Tongcheochinh();
Tongcheophu();
Tongtamgiactrenphai();
Tongtamgiacduoiphai();
Tongtamgiacduoitrai();
Tongtamgiactrentrai();
return 0;
}
