#include<conio.h>
#include<iostream.h>
#include<stdlib.h>
#include<time.h>
#define M 30
#define N 50
void nhapmang (int a[][N],int d,int c)
{
srand(time(NULL));
for(int i=0;i<d;i++)
for(int j=0;j<c;j++)
a[i][j]=rand()%100;
}
void xuatmang(int a[][N],int d,int c)
{
for(int i=0;i<d;i++){
for(int j=0;j<c;j++)
cout<<a[i][j]<<"\t";
cout<<endl;}
}
void tongcl(int a[][N],int d,int c) //Tong cac so chan le
{
float tc,tl,t,k;
t=k=0;
for(int i=0;i<d;i++)
for(int j=0;j<c;j++)
if(a[i][j]%2==0)
{tc+=a[i][j];
t++;}
else
{tl+=a[i][j];
k++;}
cout<<"Tong cac so chan la: "<<tc<<" Co "<<t<<" so chan.";
cout<<"\nTong cac so le la: "<<tl<<" Co "<<k<<" so le.";
}
void timmax(int a[][N],int d,int c) //Tim so lon nhat
{
int max;
max=a[0][0];
for(int i=0;i<d;i++)
for(int j=0;j<c;j++)
if(a[i][j]>max)
max=a[i][j];
cout<<"So lon nhat la: "<<max;
}
void timmin(int a[][N],int d,int c) //Tim so nho nhat
{
int min;
min=a[0][0];
for(int i=0;i<d;i++)
for(int j=0;j<c;j++)
if(a[i][j]<min)
min=a[i][j];
cout<<"So nho nhat la: "<<min;
}
void duongcp(int a[][N],int d,int c) //Tinh tong duong cheo phu
{
int s;
s=0;
for(int i=0;i<d;i++)
for(int j=0;j<c;j++)
if(j==d-1-i)
s+=a[i][j];
if(c==d)
cout<<"Tong duong cheo phu la: "<<s;
else
cout<<"Khong co DCP vi day ko la MT vuong.";
}
void tongduongcheo(int a[][N],int d,int c) //Tinh tong duong cheo chinh
{
float k;
for(int i=0;i<c;i++)
k+=a[i][i];
if(d==c)
cout<<"Tong duong cheo chinh la: "<<k;
else
cout<<"Khong co DCC vi so dong # so cot.";
}
void timxtrongmang(int a[][N],int d,int c,int x) //Tim so lon nhat
{
int k,l,f;
f=0;
for(int i=0;i<d;i++)
for(int j=0;j<c;j++)
if(a[i][j]==x)
{
k=i+1;
l=j+1;
f=1;
}
if(f==1)
cout<<"So co trong mang; Vi tri cua so do la: Dong "<<k<<" Cot "<<l;
else
cout<<"So ko co trong mang.";
}
void trichcacsochan(int a[][N],int d,int c) // lay so chan ra
{
cout<<"Trong mang co cac so chan: ";
for(int i=0;i<d;i++)
for(int j=0;j<c;j++)
if(a[i][j]%2==0)
cout<<a[i][j]<<"\t";
cout<<endl;
}
void trichcacsole(int a[][N],int d,int c) // lay so le ra
{
cout<<"Trong mang co cac so chan: ";
for(int i=0;i<d;i++)
for(int j=0;j<c;j++)
if(a[i][j]%2!=0)
cout<<a[i][j]<<"\t";
cout<<endl;
}
void main()
{
int a[M][N],d,c,x,m,n;
cout<<"Nhap so dong: ";
cin>>d;
cout<<"Nhap so cot: ";
cin>>c;
nhapmang(a,d,c);
cout<<"Mang da nhap la: \n";
xuatmang(a,d,c);
cout<<"\nNhan 1 de tim so trong mang.\n";
cout<<"Nhan 2 de tim so lon nhat.\n";
cout<<"Nhan 3 de tinh tong duong cheo.\n";
cout<<"Nhan 4 de tong cac so chan le.\n";
cout<<"Nhan 5 de tim so nho nhat.\n";
cout<<"Nhan 6 de trich cac so chan.\n";
cout<<"Nhan 7 de trich cac so le.\n";
cin>>m;
switch(m)
{
case 1:
cout<<"\nNhap so can tim: ";
cin>>x;
timxtrongmang(a,d,c,x);
break;
case 2:
timmax(a,d,c);
break;
case 3:
cout<<"Nhan 1 tinh duong cheo chinh\n";
cout<<"Nhan 2 de tinh duong cheo phu.";
cin>>n;
switch(n)
{
case 1:
tongduongcheo(a,d,c);
break;
case 2:
duongcp(a,d,c);
break;
}
break;
case 4:
tongcl(a,d,c);
break;
case 5:
timmin(a,d,c);
break;
case 6:
trichcacsochan(a,d,c);
break;
case 7:
trichcacsole(a,d,c);
break;
default: break;
}
getche();
}
