*, + and - with Matrices
Hi
I'm new to programing so close one eye when you look the code
the program basicly can multilply, sum and - 2 matrices so here is the code:
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#include <iostream>
using std::cout;
using std::cin;
using std::endl;
#include <iomanip>
using std::setw;
void inputMatrices(); // this one input to matrices
void matrixMultiplication(); // multiply 2 matrices
void sumMatrix();
void displayMatrix(); // display the result
void minusMatrix();
double matrix1[20][20];
double matrix2[20][20];
double ansMatrix[20][20];
int fMrows, fMcolumns, sMrows, sMcolumns; // defines the number of rows and colum for matrices
int main()
{
cout << " Matrix *, + and -" << endl;
char choice;
cout << "Enter the function that you to use * , + or - !" << endl;
char repeat = 'n';
do
{
switch(choice = cin.get())
{
case '*':
inputMatrices();
matrixMultiplication();
break;
case '+':
inputMatrices();
sumMatrix();
break;
case '-':
inputMatrices();
minusMatrix();
break;
default:
cout << "Incorrect character pleas type again!" << endl;
repeat = 'y';
break;
}
}while(repeat == 'y');
void displayMatrix();
cout <<"SH.H" << endl;
system("pause");
return 0;
}
void inputMatrices()
{
cout << "Enter first matrix:" << endl;
cout << "Enter rows: ";
cin >> fMrows ;
cout << "Enter columns: ";
cin >> fMcolumns;
for(int i = 0; i < fMrows; i++){
cout << "Enter the elemnts of " << i + 1 << " row" << endl;
for(int j = 0; j < fMcolumns; j++){
cin >> matrix1[i][j];
}
}
cout << "Enter second matrix:" << endl;
cout << "Enter rows: ";
cin >> sMrows ;
cout << "Enter columns: ";
cin >> sMcolumns;
for(int i = 0; i < sMrows; i++){
cout << "Enter the elemnts of " << i + 1 << " row" << endl;
for(int j = 0; j < sMcolumns; j++){
cin >> matrix2[i][j];
}
}
}
void matrixMultiplication()
{
if(fMcolumns == sMrows)
{
for(int rows = 0; rows < fMrows; rows++){
for(int columns = 0; columns < sMcolumns; columns++){
double sum = 0;
for(int i = 0; i < fMcolumns; i++){
sum += matrix1[rows][i] * matrix2[i][columns];
}
ansMatrix[rows][columns] = sum;
}
}
}
else
{
cout << "The matrixs of order " << fMrows << "X" << fMcolumns << " and " << sMrows << "X" << sMcolumns
<< " can not be multiplacated!\nPleas enter the correct matrices!" << endl;
main();
}
}
void sumMatrix()
{
if( fMrows == sMrows && fMcolumns == sMcolumns)
{
for(int i = 0; i < fMrows; i++){
for(int j = 0; j < fMcolumns; i++)
ansMatrix[i][j] = matrix1[i][j] + matrix2[i][j];
}
}else
cout << "Incorrect Matrice.\nPleas type the matrice again!" << endl;
main();
}
void minusMatrix()
{
if( fMrows == sMrows && fMcolumns == sMcolumns)
{
for(int i = 0; i < fMrows; i++){
for(int j = 0; j < fMcolumns; i++)
ansMatrix[i][j] = matrix1[i][j] - matrix2[i][j];
}
}else
cout << "Incorrect Matrice.\nPleas type the matrice again!" << endl;
main();
}
void displayMatrix()
{
for(int i = 0; i < fMrows; i++){
cout << "|";
for(int j = 0; j < sMcolumns; j++)
cout << setw(4) << ansMatrix[i][j];
cout << " |" << endl;
}
}
|
Pleas tale me what do you think for the code I'm really interested in your opinions
Last edited on
Inconsistent indentation, recursion with main(), global data, functions producing output...
You still have a long way to go.
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