matrix.cpp code

[paditya99]

#include
using namespace std;
void matrixrow_add(int a[100][100],int n,int m)
{
cout<<"\n ________________________________________________________________________________\n";
cout<<"\n";
cout<<"\n\n\t => THE ROW WISE SUM OF MATRIX : \n";
cout<<"\n";
int sum=0,sum2=0;
for(int i=0;i<n;i++)
{
cout<<"\t\t\t";
for(int j=0;j<m;j++)
{
cout<<a[i][j]<<" ";
sum=sum+a[i][j];
}
cout<<" = "<<sum;
cout<<"\n\n";
sum=0;
}

}
void matrixcol_add(int a[100][100],int n,int m)
{
cout<<"\n\t => THE COLUMN WISE SUM OF MATRIX : \n";
cout<<"\n";

int sum=0;

for(int i=0;i<m;i++)
{
cout<<"\t\t\t";
for(int j=0;j<n;j++)
{
cout<<a[j][i]<<" ";
sum=sum+a[j][i];
}
cout<<" = "<<sum;
cout<<"\n\n";
sum=0;
}

}
void matrixdiag1_add(int a[100][100],int n,int m)
{
cout<<"\n ________________________________________________________________________________\n";
cout<<"\n";
int sum=0,sum2=0,flag,flagi;
for(int i=0;i<n;i++)
{

 for(int j=0;j<m;j++)
 {
    if(i==j)
    {
        sum=sum+a[i][j];
        flag=1;
    }
    if((i+j)==n-1)
    {
        sum2=sum2+a[i][j];
        flagi=1;
    }
 }

}
if(n==m)
{
if(flag==1)
{
cout<<"\n\t => SUM OF THE MAJOR DIAGONAL OF MATRIX : "<<sum;
}
if(flagi==1)
{
cout<<"\n\t => SUM OF THE MINOR DIAGONAL OF MATRIX : "<<sum2;
}
}

else
{
cout<<"\n\t => !! ERROR !! No. of rows and columns are not same, so sum of diagonal cannot be calculated. \n";
}
cout<<"\n";

}
void matrixlowtri_add(int a[100][100],int n,int m)
{
cout<<"\n ________________________________________________________________________________\n";
cout<<"\n";

cout<<"\n\t => THE LOWER TRIANGULAR ELEMENTS OF MATRIX IS SHOWN BELOW : \n";
int sum=0;

for(int i=0;i<n;i++)
{
cout<<"\n\t\t\t";
for(int j=0;j<m;j++)
{
if(i>=j)
{
cout<<a[i][j]<<" ";
sum=sum+a[i][j];
}
if(i<j)
{
cout<<""<<" ";
}
}
cout<<"\n";
}
cout<<"\n\t => SUM OF LOWER TRIANGULAR ELEMENTS OF THE MATRIX IS : "<<sum;
}
void matrixupptri_add(int a[100][100],int n,int m)
{
cout<<"\n\t => THE UPPER TRIANGULAR ELEMENTS OF MATRIX IS SHOWN BELOW : \n";
int sum=0;
for(int i=0;i<n;i++)
{
cout<<"\n\t\t\t";
for(int j=0;j<m;j++)
{
if(i<=j)
{
cout<<a[i][j]<<" ";
sum=sum+a[i][j];
}
if(i>j)
{
cout<<""<<" ";
}
}
cout<<"\n";
}
cout<<"\n\t => SUM OF UPPER TRIANGULAR ELEMENTS OF THE MATRIX IS : "<<sum;
}
void matrixtranspose(int a[100][100],int n,int m)
{
cout<<"\n ________________________________________________________________________________\n";
cout<<"\n";
cout<<"\n\t => TRANSPOSE OF THE MATRIX IS : \n";
cout<<"\n";
for(int i=0;i<m;i++)
{
cout<<"\t\t\t";
for(int j=0;j<n;j++)
{
cout<<a[j][i]<<" ";
}
cout<<"\n\n";
}

}
int main()
{
int a[100][100],i,j,sum=0,n,m,x;
cout<<"\n\t ======================\n";
cout<<" \t MATRIX OPERATIONS\n";
cout<<" \t ======================\n";
cout<<"\n\n\t Enter the number of rows(n) : ";
cin>>n;
cout<<"\n\t Enter the number of columns(m) : ";
cin>>m;
cout<<"\n\n\t Enter the elements of the matrix : ";
for(i=0;i<n;i++)
{
for(j=0;j<m;j++)
{
cin>>a[i][j];
}
}
cout<<"\n\t THE MATRIX YOU ENTERED IS : \n";
for(i=0;i<n;i++)
{
cout<<"\n\t\t\t";
for(j=0;j<m;j++)
{
cout<<a[i][j]<<" ";
}
}
cout<<"\n\n\t Enter the program you want to run : ";
cout<<"\n\n\t 1. ROW WISE & COLUMN WISE SUM OF A MATRIX \n";
cout<<"\t 2. SUM OF MAJOR & MINOR DIAGONAL OF A MATRIX\n";
cout<<"\t 3. LOWER TRIANGULAR & UPPER TRIANGULAR ELEMENTS OF MATRIX\n";
cout<<"\t 4. TRANSPOSE OF A MATRIX\n";
cin>>x;
switch(x)
{
case 1:
matrixrow_add(a,n,m);
matrixcol_add(a,n,m);
break;

case 2:
 matrixdiag1_add(a,n,m);
 break;

case 3:
    if(n==m)
    {
      matrixlowtri_add(a,n,m);
      matrixupptri_add(a,n,m);
    }
    else
    {
        cout<<"    ______________________________________________________________________\n";
        cout<<"\n\n\t ERROR !! 'n' is not equal to 'm'. \n";
    }


 break;

case 4:
  matrixtranspose(a,n,m);
  break;

default:
    cout<<"\n\t INVALID INPUT !! ENTER AGAIN : ";
    break;

}

}