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//prg for 2darray
#include<iostream>
#define Num_Rows 2
#define Num_Columns 2
using namespace std;
//functions
int getTotal (int[][Num_Columns]);
double getAverage (int);
int getRowTotal(int[][Num_Columns],int);
int getColumnTotal(int[][Num_Columns],int);
double getAverage(int);
int getHighestInRow(int[][Num_Columns],int);
int getLowestInRow(int[][Num_Columns],int);
//main
int Main ()
{
//variables
int a,b,value,ch;
int num[Num_Rows][Num_Columns] = {15,30,45,60};
cout<< "The elements for this matrix are as follows:\n"<<endl;
for(a=0;a<Num_Rows;a++)
{
for(b=0;b<Num_Columns;b++)
cout<<num[a][b]<<"\t";
cout<<endl;
}
// user makes choice
for(;;)
{
cout<<"\nPlease choose one of the following options: "<<endl;
cout<<"1. Find Total:\n";
cout<<"2. Find Average:\n";
cout<<"3. Find Row Total:\n";
cout<<"4. Find Column total:\n";
cout<<"5. Find Highest Value in a row:\n";
cout<<"6. Find lowest value in a row:\n";
cout<<"7. Exit\n:";
cout<<"Please enter your selection: ";
cin>>ch;
//switch for function
switch(ch)
{
case 1: cout<<"Total: "<<getTotal(num)<<endl;
break;
case 2: value= getTotal(num);
cout<<"Average: "<<getAverage(value)<<endl;
break;
case 3: cout<<"Please enter a row number: ";
cin>>a;
if(a<0||a>Num_Rows)
{
cout<<"Selection must have between 0 and"<<Num_Rows<<" Please make another selection:\n";
break;
}
else
cout<<"the value of row "<<a<<"is: "<<getRowTotal(num,a)<<endl;
break;
case 4: cout<<"Please enter a column number: ";
cin>>a;
if(a<0||a>Num_Columns)
{
cout<<"Selection must have between 0 and"<<Num_Columns<<" Please make another selection:\n";
break;
}
else
cout<<"the value of coulmn "<<a<<"is: "<<getColumnTotal(num,a)<<endl;
break;
case 5: cout<<"Please enter a row number: ";
cin>>a;
if(a<0||a>Num_Rows)
{
cout<<"Selection must have between 0 and"<<Num_Rows<<" Please make another selection:\n";
break;
}
else
cout<<"Highest value in row "<<a<<"is: "<<getHighestInRow(num,a)<<endl;
break;
case 6: cout<<"Please enter a row number: ";
cin>>a;
if(a<0||a>Num_Rows)
{
cout<<"Selection must have between 0 and"<<Num_Rows<<" Please make another selection:\n";
break;
}
else
cout<<"Lowest value in row "<<a<<"is: "<<getLowestInRow(num,a)<<endl;
break;
case 7: system("pause");
return 0;
default: cout<<"Please make a correct selection\n";
}
}
}
//function for total of all values
int getTotal(int row[][Num_Columns])
{
//variables
int a,b,value=0;
for(a=0;a<Num_Rows;a++)
for(b=0;b<Num_Columns;b++)
value+=row[a][b];
return value;
}
//function for average
double getAverage(int totalValues)
{
double avg;
avg=totalValues/(Num_Rows*Num_Columns);
return avg;
}
//function for row totals
int getRowTotal(int num[][Num_Columns],int n)
{
//variables
int a,value=0;
for(a=0; a<Num_Columns;a++)
value+=num[n][a];
return value;
}
//function for Column totals
int getColumnTotal(int num[][Num_Columns],int n)
{
//variables
int a,value=0;
for(a=0; a<Num_Rows;a++)
value+=num[a][n];
return value;
}
//function for Highest value in row
int getHighestInRow(int num[][Num_Columns],int n)
{
//variables
int a,value=0;
value=num[n][0];
for(a=1;1<Num_Columns;a++)
if(num[n][a]>value)
value=num[n][a];
return value;
}
//function for lowest value in row
int getLowestInRow(int num[][Num_Columns],int n)
{
//variables
int a,value=0;
value=num[n][0];
for(a=1;1<Num_Columns;a++)
if(num[n][a]<value)
value=num[n][a];
return value;
}
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